life buoy
Water
ˈlife ˌbuoy noun [countableC] 
TTWa large ring made out of material that floats, which you throw to someone who has fallen in the water, to prevent them from drowning 救生圈- a snack bar
- a snap
- a snap of fingers
- a snap of sb fingers
- a snap of somebody's fingers
- a snatch of
- a snatch of conversation
- a snatch of conversation/music/song etc
- a snatch of music
- a snatch of song
- as near as damn it
- (as) near as damn it
- a. s. neill
- a-s-neill
- a s neill
- a.-s.-neill
- as nice as pie
- as nice/as stupid etc as they come
- as nice as they come
- a snip
- a social animal
- a sod
- as of
- as of something
- as of sth