Circular piston
[电] 圆活塞
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
Jogging is a popular form of exercise.
慢跑是一种十分普及的体育活动。
I read 10 lettres.
我读了十封信。
With the medicine box under her arm, Miss Zhao hurried off to look after the man.
夹起药箱，赵小姐匆忙去照料那个人。