Piston clearance
[化] 活塞间隙
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
The number you are calling -- 555-8448 --
你打的电话号码555 8448
I would like you to keep is a secret.
我要你保守秘密。
But I must ask my parents first. What time shall I come?
不过我必须先问问父母。我几点钟来呢？