| 单词 | trough |
| 释义 | trough n. 1. a long narrow open receptacle for water, animal feed, etc. 2. a channel for conveying a liquid. 3. an elongated region of low barometric pressure. 4. a hollow between two wave crests. 5. the time of lowest economic performance etc. 6. a region around the minimum on a curve of variation of a quantity. 7. a low point or depression. Etymology: OE trog f. Gmc |
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