lifebuoy
n. 救生圈
例句
AB: Lifebuoy dropped in water.
一水:救生圈已抛入水中。
I'm a little scared. Do you offer the lifebuoy for us?
我有点怕了,你们提供救生圈吗?
Produces orange smoke for daylight use and combined with the lifebuoy.
产生橙色烟雾,供白昼使用,并连附于救生圈上。