单词：buoy

中文含义：浮标；救生圈；使振奋

英语词性：noun/verb

美式音标：/’bɔɪ/

同义词：float, marker, beacon, lifesaver

易混淆单词：boy, buoyant

例句：

1. The fishermen saw the buoy in the distance and knew they were close to shore.

2. The Coast Guard deployed a buoy to mark the location of the sunken ship.

3. The news of his promotion buoyed his spirits and he felt motivated to work even harder.