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单词 trough
释义 trough/trɒf/n. 1 a long narrow open receptacle for water, animal feed, etc. 槽;水槽;(牲畜的)饲料槽 2 a channel for conveying a liquid 排水沟;引水道 3 an elongated region of low barometric pressure (低气压) 4 a hollow between two wave crests (水波间的)波谷 5 the time of lowest economic performance etc. (经济活动中的)低谷期,萧条期 6 a region around the minimum on a curve of variation of a quantity (曲线上的)极小值 7 a low point or depression 低谷,淡季 [Old English trog, from Germanic]
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