avail,有益，有用，-able,形容词后缀。引申词义可获得的，有空的等。

1. They have only a vague idea of the amount of water available.

他们只是大概知道可用水的总量。

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2. Other amenities, less commonly available, include a library and exercise room.

还有一些不太常有的设施，包括图书馆和健身房。

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3. Cheap goods are available, but not in sufficient quantities to satisfy demand.

有一些廉价的商品，但是数量不足以满足需求。

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4. The service covers contraceptive advice and health checks, and is available free.

服务项目包括避孕建议和健康检查，并且免费提供。

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5. Water and electric hook-ups are available and facilities are good.

水和电都可以接通，设施也很不错。

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[ available 造句 ]