久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

首頁英語詞典sumpsump英英釋意

sump

英 [s?mp] 美[s?mp]
  • n. 水坑；污水坑；機油箱
  • vi. 挖深（渠道，井筒等）

英英釋意

1. an oil reservoir in an internal combustion engine
2. a well or other hole in which water has collected
3. a covered cistern; waste water and sewage flow into it