doubtful
英 [ˈdaʊtfl] 美 [ˈdaʊtfl]adj. 可疑的；令人生疑的；疑心的；不能确定的
例句：This wine is of doubtful quality.
这酒的质量有问题。
Rose was doubtful about the whole idea.
罗斯对整个设想持怀疑态度。
The arrangement is of doubtful legality.
这项约定是否合法值得怀疑。
defective
英 [dɪˈfektɪv] 美 [dɪˈfektɪv]adj. 有缺陷的；不完美的
n. 有缺陷的人；不完全变化词
例句：Retailers can return defective merchandise.
零售商可以退回有瑕疵的商品。
Her hearing was found to be slightly defective.
经检查，她的听力有点缺陷。
A manufacturer negligently made and marketed a car with defective brakes.
一家制造商渎职，制造并销售了一款有制动缺陷的汽车。
alienate
英 [ˈeɪliəneɪt] 美 [ˈeɪliəneɪt]vt. 使疏远，离间；让与
例句：The government cannot afford to alienate either group.
该政府承担不起冷落两个组织中的任何一个。
His second wife, Alice, was determined to alienate him from his two boys.
他的第2个妻子阿丽丝决心让他疏远他的两个儿子。
Management jargon can alienate staff and leave bosses looking untrustworthy and weak, according to a survey commissioned by Investors in People.
人力投资者委托进行的一项调查显示，管理术语会让员工产生反感，让老板看起来不值得信任且软弱。
along
英 [əˈlɒŋ] 美 [əˈlɔːŋ]prep. 沿着；顺着；（事件）进展
adv. 一起；向前；来到；越来越（好）；一直
例句：Claire hurried along the road.
克莱尔匆匆地沿路而行。
We cantered along the beach.
我们骑着马沿海滩慢跑。
I'm glad you came along.
有你跟我一起来，我很高兴。
acquisition
英 [ˌækwɪˈzɪʃn] 美 [ˌækwɪˈzɪʃn]n. 获得物，获得；收购
例句：Indeed, ease of acquisition is the problem.
事实上，容易获得是个问题。
He devotes his time to the acquisition of knowledge.
他把时间用在获取知识上。
His second hypothesis is the natural order in the acquisition hypothesis.
他的第二个假说是习得学说中的自然秩序。
回顾
- doubtful
- defective
- alienate
- along
- acquisition