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- touch sb for sth
- touch sb on the raw
- touch sb up
- touch-screen
- touch screen
- touchscreen
- touch-screens
- touchscreens
- touch somebody for something
- touch somebody on the raw
- touch somebody/something ↔ up
- touch somebody up
- touch something off
- touch something to something
- touch something up
- touch something ↔ off
- touch sth off
- touch sth to sth
- touch sth up
- touchstone
- touchstones
- touch to
- touch toes
- touch tone phone
- touch-tone-phone