Preventer
n. 妨碍者, 妨碍物, 预防者
✅ 同义词
🏥 医学释义
防护设备，防护装置
🗣️ 情景例句
Going away to college for the first time
第一次离家上大学，
The efficiency is greatly raised,and the intensity of labor is decreased.
工作效率大大地提高了，而劳动强度却降低了。
Once a year, a race is held for old cars.
旧式汽车的比赛每年举行一次。