The old stone cattle trough still sits by the main entrance.

陈旧的石制牛食槽仍然放在大门口。

The boat rolled heavily in the troughs between the waves. [+ between]

船在波涛起伏的海浪中剧烈摇摆。

Looking back afterwards you will see that this was not a terminal trough in your career. [+ in]

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。

American bank shares have risen by 60% since their trough 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%。

The trough of low pressure extended over about 1000 kilometres.

低压槽延伸约 1,000 公里。