1. a narrow depression (as in the earth or between ocean waves or in the ocean bed)

2. a channel along the eaves or on the roof; collects and carries away rainwater

3. a concave shape with an open top

4. a treasury for government funds

5. a long narrow shallow receptacle

6. a container (usually in a barn or stable) from which cattle or horses feed

1.(喂家畜的)饲料槽，饮水槽
Atrough is a long narrow container from which farm animals drink or eat.

e.g. The old stone cattletrough still sits by the main entrance.
陈旧的石制牛食槽仍然放在大门口。

2.(两个大浪之间的)波谷
Atrough is a low area between two big waves on the sea.

e.g. The boat rolled heavily in the troughs between the waves.
船在波涛起伏的海浪中剧烈摇摆。

3.(商业活动等的)淡季，低谷
Atrough is a low point in a process that has regular high and low points, for example a period in business when people do not produce as much as usual.

trough的反义词

e.g. Looking back afterwards you will see that this was not a terminaltrough in your career...
今后回想起来你就会明白，这并非你事业中一蹶不振的低谷。
e.g. American bank shares have risen by 60% since theirtrough last October.
美国的银行股自从去年 10 月跌入低谷以来已经上涨了 60%。

4.低压槽
Atrough of low pressure is a long narrow area of low air pressure between two areas of higher pressure.

e.g. Thetrough of low pressure extended over about 1000 kilometres.
低压槽延伸约 1,000 公里。

1. 槽：给出一个半圆柱槽(trough)的图形(圆柱沿直径竖着切一半),告诉直径是2,半圆柱的容积是32,求长度. 参考答案:64/Pi

2. 低压槽：第二阶段是,当某些涡流微弱到同时被喷射气流中偶尔出现的低压槽(trough)或洛士贝波(Rossby waves)困住时,反而会合而为一. 因此,捕获、合并的过程不断进行,直到每条涡流带只剩一对涡流为止. 如上图,DE大白斑於1997~1998年时消失,

3. 水槽：然后通过一个通电的水槽(trough),这个水槽的高度设计的正好可以淹没鸡的脖子,使用的电压同样不是为了杀死,而是为了击昏鸡. 过了这道关,生产线就安静多了,乱扑哒的鸡绝大多数都已经被击昏,彻底瘫痪了,肌肉很放松,使后来的脱毛很方便.

1. 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。
2. 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。
3. 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。
4. 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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• Pigs lined the troughs, jostling, squealing, eating their swill.

  出自：I. Wallace

• Water..brought specially from the trough in the centre of town.

  出自：R. Fraser