n.水槽；马槽；低谷；低潮
用作名词 (n.) So she quickly emptied her jar into the trough.
她迅速地把水罐里的水统统倒进水槽。
This type of barrier is a combination of the pumping trough and the hydraulic ridge.
这类屏障是把抽水槽和水力分水岭结合在一起。
However, as a mother of two, she was soon out of the trough.
但是，作为两个孩子的母亲，她很快就走出了低谷。
But economists do not necessarily expect the trough in production to be long.
但是，经济学家并不一定认为生产低潮会持续很长时间。
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