sump
柯林斯詞典
1. N-COUNT A sump is a low-lying open area where waste water gathers. 水池
2. N-COUNT A sump is a deep cave which is often filled with water. 集水坑
3. N-COUNT The sump is the place under an engine which holds the engine oil. (發(fā)動機下麪的)集油槽[英國英語]
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