名詞 preserver:

1. a skilled worker who is employed to restore or refinish buildings or antique furniture
   同義詞：refinisher, renovator, restorer
2. a cook who preserves fruits or meat
3. someone who keeps safe from harm or danger
4. rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning
   同義詞：life preserver, flotation device

1. A silky fiber obtained from the fruit of the silk-cotton tree and used for insulation and as padding in pillows, mattresses, and life preservers.
   木棉一種絹狀纖維，從木棉樹(shù)的果實(shí)中提取出來(lái)，用作隔音材料，也可用作枕頭，褥墊和救生用具中的墊料
2. This is a life preserver.
   這是救生用品。