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4周搞定2000+托福核心词
concise = con(共同) + cise(切) = 共同切砍→简洁的
confederate = con(共同) + feder(联盟) + ate(形容词) = 共同联盟,联合的
centre = centr(中心) + e(名词后缀) = 中心
centric = centr(中心) + ic(…的) = 中心的
aberration = ab(离开) + err(漫游) + ation(表结果) = 离开常规去漫游→偏差
acceleration = ac(加强) + celer(快) + ation(表结果) = n.加快，加速
全都集中在一处→集中
concentration
常考释义
Well, are you intending to study film as your main concentration?
你打算将电影作为你的主要科目吗？
来源于：听力OFFICIAL5 C2n. 浓度；密度
Global ozone concentrations have dropped over the last decade.
过去的十年里，全球臭氧密度降低了。
Then your ion concentrations go out of whack as well.
然后你的离子浓度含量会变得紊乱。
来自《生物医学工程探索第16集》
图片源自网络
Methane forms in large concentration above wetlands, and as it turns out, the cultivation of certain grains creates vast areas of artificial wetlands, and probably drastically increases the amount of methane getting into the atmosphere, over and above what would be there.
甲烷在沼泽上大批形成，而且，随着谷物种植面积的扩大，一大批人造湿地被制造出来，大量增加了进入大气层的甲烷含量，超过了以往的应有的水平。
来源于：听力OFFICIAL20 L3Um, however, for the latest interglacial period, the one we are in now, this pattern did not hold, that is, the concentration of carbon dioxide and methane dipped a little bit after, uh, uh, after peaking at the beginning, near the beginning of the interglacial period, but then it began to rise again.
嗯，但是，在最后一次间冰期之后，即我们现在所处的时代里，这种模式就不适应了。虽然在进入间冰期之后，甲烷和二氧化碳的含量自达到峰值以后有所下降，但之后它又开始上升了。
来源于：听力OFFICIAL20 L3But uh, gradually as the concentration of greenhouse gases goes down, Earth starts to cool again, and eventually you slip back into an Ice Age.
但是，嗯，随着温室气体的含量降到一定水平，地球的温度又重新开始下降，最终回到冰冻状态。
来源于：听力OFFICIAL20 L3Now, the typical pattern for an interglacial period, and we have studied several, is that the concentration of carbon dioxide and methane gas actually reaches it... its peak, that is, there is the most carbon dioxide and methane gas, uh, greenhouse gases in the atmosphere just after the beginning of the interglacial period.
我们之前学习过的间冰期的几种气候模式，其中一种是大气中二氧化碳和甲烷含量达到峰值，即在间冰期的开端，大气中的温室气体（二氧化碳和甲烷）含量是最多的。
来源于：听力OFFICIAL20 L3From a plant’s evolutionary view point, however, it was also a land of opportunity, free of competitors and predators and full of carbon dioxide and sunlight (the raw materials for photosynthesis, which are present in far higher concentrations in air than in water).
然而，从植物进化的角度来看，这同时是一片充满机会的土地，没有竞争者和捕食者，并且具有充足的二氧化碳和阳光（这些是光合作用的原材料，它们在空气中的含量要远远高于在水中的含量）。
来源于：阅读OFFICIAL25 P3At locations around the globe, geologists had found an unusually high concentration of iridium in the layer of sedimentary rocks that was formed about 65 million years ago.
在世界各地的很多地方，地质学家发现铱元素在六千五百万年前的沉积岩层中含量异常丰富。
来源于：阅读OFFICIAL33 P3Even though mean levels may mask much higher local concentrations, it is still the case that many deep-sea animals are exposed to conditions in which a normal filter-feeder would starve.
即使平均水平可能忽略了局部可能有机物密度很高这一点，但依然说明很多深海动物面临的条件很恶劣，一般的滤食动物可能会饿死。
来源于：阅读OFFICIAL45 P3n. 专心；专注；全神贯注
We lacked concentration and it cost us the goal and the game.
我们不太专注，这让我们丢球并输掉比赛。
His concentration on civil rights has improved his popularity.
他一心扑在民权事业上，这让他更受欢迎。
Well, are you intending to study film as your main concentration?
你打算将电影作为你的主要科目吗？
来源于：听力OFFICIAL5 L4These should be the area of concentration for researchers to locate and protect those regions as a way to sustain coral reefs.
这些应该是研究人员重点研究的区域，为了去定位并且保护这些区域，从而维护这些珊瑚礁。
来源于：听力OFFICIAL27 L2I am even thinking about doing a graduate degree with a concentration in that after I taught for a while.
我甚至想要在我教了一段时间书之后，在那方面拿一个研究生学位。
来源于：听力OFFICIAL28 L4n. 集中；集聚
There's been too much concentration of power in the hands of central authorities.
中央政府手中集权过重。
This has also led to a concentration of wealth in a small number of hands.
这也导致了财富集中在少数人手里。
Saline soils, which have high concentrations of sodium chloride and other salts, limit plant growth, and research continues to focus on developing salt-tolerant varieties of agricultural crops.
含有高浓度的氯化钠和其他盐类的盐碱土壤抑制植物生长，于是研究继续集中开发耐盐农作物品种。
来源于：阅读OFFICIAL5 P1Also, data from a later mission indicates significant concentrations of hydrogen and by inference water, less than a meter underground at both poles.
同样，最近一项月球探测任务的数据显示，那里氢气高度密集，据推测，两级的水就在地下不到一米处。
来源于：听力OFFICIAL5 L3These peoples settled at first in scattered hunting-and-gathering bands, although in some places near lakes and rivers, people who fished, with a more secure food supply, lived in larger population concentrations.
这些部落起初分散地定居，并仍靠打猎和采集维生，尽管是在靠近湖泊和河流的地区人们以捕鱼为业，有较稳定的食物供给，聚集了较多的人口。
来源于：阅读OFFICIAL7 P3So the unusually high concentration of Ir seems to require a special explanation.
所以这种不正常的铱的富集可能需要一种特殊的解释。
来源于：阅读OFFICIAL8 P2Ir is found in high concentrations in some meteorites,in which the solar system’s original chemical composition is preserved.
在一些陨石中，依可能会高度富集，而这里常保存着太阳系内原始的化学组成。
来源于：阅读OFFICIAL8 P2How we’re able to keep from being distracted and what the conditions for good concentration are.
How we’re able to keep from being distracted and what the conditions for good concentration are.
来源于：听力OFFICIAL15 L2Concentrations of positively charged particles develop at the top and bottom of the cloud, but the middle region becomes negatively charged.
带正电的粒子聚集在云的顶部和底部，但是中间区域形成的是带负电的粒子。
来源于：阅读OFFICIAL18 P3But what about the Spartinas, well, they allow a certain amount of salt to enter their cells, bringing the salt content of the water within the plant, to a slightly higher concentration than that of the surrounding seawater.
但大米草属的植物是怎样的呢？它们会允许一部分海水进入它们的细胞，从而把盐分带入到植物中，形成一个比周围海水含盐度更高的盐溶液。
来源于：听力OFFICIAL19 L5Um... so we are entering into uncharted territory now, in terms of the amount of carbon dioxide, the concentrations of carbon dioxide that are now being put into the atmosphere as a result of industrialization and the use of fossil fuels.
总之，工业革命的到来使得化石燃料大量消耗，大气层的二氧化碳含量高度聚集。
来源于：听力OFFICIAL20 L3And then, for reasons which are not entirely clear, the concentration of greenhouse gases gradually goes down.
之后，因为一些现在还不是特别明确的原因，温室气体的聚集逐渐下降。
来源于：听力OFFICIAL20 L3The most significant data have come from a concentration on three major questions.
最重要的数据集中在三个主要问题上。
来源于：阅读OFFICIAL23 P3There's no symmetry to its overall shape, no central concentration of galaxies, but it happens to have both elliptical and spiral galaxies within it.
There's no symmetry to its overall shape, no central concentration of galaxies, but it happens to have both elliptical and spiral galaxies within it.
来源于：听力OFFICIAL42 L3An irregular cluster might appear to be lopsided, asymmetrical, with a little concentration of galaxies in the center.
一个不规则的星团可能出现不平衡，不对称，只有少量星系集中在中间的情况。
来源于：听力OFFICIAL42 L3And as for the bananas, researchers also found a high percentage of fossils from banana plants in sediment samples dating from about 7,000 years ago, proof the bananas were deliberately planted, because where bananas grow naturally the concentration of the plant fossils is lower.
And as for the bananas, researchers also found a high percentage of fossils from banana plants in sediment samples dating from about 7,000 years ago, proof the bananas were deliberately planted, because where bananas grow naturally the concentration of the plant fossils is lower.
来源于：听力OFFICIAL44 L5n. 浓缩【化】
Water temperature can fluctuate seasonally or even daily and changing level of rainfall can lead to fluctuations in the concentration of chemical in the water or even to period in which the aquatic habitat dries up.
水温会随季节变化，甚至在一天当中也不尽相同；降雨情况的变化也会导致水中所含的化学元素的变化，或因水域生境干涸而成周期性变化。
concentration on
注意力集中于…
concentration of sth.
集中；聚集
stress concentration
应力集中
low concentration
低浓度；低集中度
lethal concentration
致死浓度
反义词
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