| a channel along the eaves or on the roof; collects and carries away rainwater
同义词：gutter,
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| a container (usually in a barn or stable) from which cattle or horses feed
同义词：manger,
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| a long narrow shallow receptacle
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| a narrow depression (as in the earth or between ocean waves or in the ocean bed)
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| a treasury for government funds
同义词：public treasury, till,
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| a concave shape with an open top
同义词：bowl,
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| 1. | The trough is the lowest level of the cycle .
谷底是整个周期的最低点。
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| 2. | Folds commonly show a pairing of crests and troughs .
褶皱通常显示出成对的脊与糟。
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| 3. | 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。
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| 4. | Such a trough is called flume .
这样的木槽叫水槽。
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| 5. | A deep trough divides the two parts of the antarctic .
一道很深的海沟把南极洲一分为二。
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| 6. | I have to keep the boat out of the trough of the waves .
我得不让船落进波浪间的凹处去。
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| 7. | Some of the bars and troughs are exposed by low tide .
一些砂洲和沟槽在低潮位时，露出于水面。
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| 8. | The rocks were folded by collapsing into the center of the trough .
岩石由于坍陷进入凹槽的中心而发生褶皱。
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| 9. | Where a trough and crest coincide we get the total amplitude zero .
在波峰与波谷重合之处，总振幅实际上为零。
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| 10. | The best method to date is to let the waste fibre fall into a trough .
到目前，最好的办法是让废丝落在一个槽中。
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