Primer pump
[化] 起动泵
🧩 词语组成解析
primer
['praimə]
n. 底漆;启蒙读本;入门书;
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
It's almost lunchtime, and no fish yet.
差不多到午餐时间了， 还没钓到鱼。
Knowledge advances by steps not by leaps.
知识的获得是循序渐进而不是突飞猛进的。
I was very tired this morning. I couldn't get up.
我早上很累，起不来。