Rotopiston pump
[化] 转子活塞泵
🧩 词语组成解析
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
Marketing promotion.
市场推广。
A useful trade is a mine of gold.
一样有用的手艺是取之不尽的财富。
the strangest of them being perhaps the hovercraft.
其中最新奇的要数气垫船了。