Life preserver
n. <美>救生工具, <英>（用以自卫的）护身棒
🧩 词语组成解析
life
[laɪf]
n. 生活，生计;生命，性命;一生，寿命;人生，尘世;
n. 保护者, 保存者, 防腐物, 防护物\\n[法] 保存者, 保管人, 保护人
🗣️ 情景例句
I'll unthaw the meat in the microwave oven.
我要用微波炉把肉解冻。
That was a close call! We nearly hit that car.
真是好险阿，我们差点撞着那辆汽车。
I know that he's doing his best, but he says that he is a little weak in Chinese.
我知道他非常努力，但他说他的中文有点儿差。