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The old stone cattle trough still sits by the main entrance.陳舊的石制牛食槽仍然放在大門口。The trough of low pressure extended over about 1000 kilometres.低壓槽延伸約1,000公里。As the wave bore down on us, the trough deepened.當波濤向我們壓來時, 波谷加深了....
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trough的復數形式為：troughs...
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As the wave bore down on us, the trough deepened.當波濤向我們壓來時, 波谷加深了.The old stone cattle trough still sits by the main entrance.陳舊的石制牛食槽仍然放在大門口。The trough of low pressure extended over about 1000 kilometres.低壓槽延伸約 1,000 公里...
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n.水槽，食槽，低谷期，[航]深海漕，[氣]低氣壓槽...