Piston clearance
[化] 活塞间隙
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
Going away to college for the first time
第一次离家上大学，
I'd like to make an appointment with Mrs. Green.
我想约个时间见格林女士。
I mean powder that is made from fish, blood and bone.
我是指用鱼、血和骨头制成的粉末。