Piston plunger pump
[机] 柱状活塞泵
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
plunger
[['plʌndʒə]]
n. 跳水者, 潜水者, 活塞\\n[电] 活柱
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
I see. Is a credit card OK?
我明白了。用信用卡可以吗？
But you have to pay 5% commission on this money exchange.
但兑换这笔外币，您得另外付5%的手续费。
You must keep it a secret. You mustn't tell anybody else.
你必须保密，谁都不能讲。