| 单词 | trough |
| 释义 | trough n 1 long narrow open box for animals to feed or drink from 饲料槽; 饮水槽. =>illus at pig 见 pig 插图. 2 shallow channel that allows water, etc to drain away 排水沟. 3 low area between two waves or ridges 波谷; 低谷. =>illus at surf 见 surf 插图. 4 (in meteorology) long narrow region of low atmospheric pressure between two regions of higher pressure （气象）低压槽. Cf 参看 ridge 3. |
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