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
Condemns past employers.
谴责以前的老板。
The whole book is produced and edited in the pursuit of excellence.
这本书在出版和编辑全过程都力求完美。
When a student recently saw two workmen using a pneumatic drill outside his university, he immediately telephoned the police and informed them that two students dressed up as workmen were tearing up the road with a pneumatic drill.
最近有个学生看见两个工人在学校门外用风钻干活，马上打电话报告警察，说有两个学生装扮成工人，正在用风钻破坏路面。