n.水槽；馬槽；低谷；低潮

So she quickly emptied her jar into the trough. 她迅速地把水罐里的水統(tǒng)統(tǒng)倒進(jìn)水槽。

This type of barrier is a combination of the pumping trough and the hydraulic ridge. 這類屏障是把抽水槽和水力分水嶺結(jié)合在一起。

However, as a mother of two, she was soon out of the trough. 但是，作為兩個孩子的母親，她很快就走出了低谷。

But economists do not necessarily expect the trough in production to be long. 但是，經(jīng)濟(jì)學(xué)家并不一定認(rèn)為生產(chǎn)低潮會持續(xù)很長時間。