Variable delivery pump
[化] 可变排量泵
🧩 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
who really needs to be wearing a tuxedo,
真正需要穿燕尾服的人，
Deeds are males, and words are females.
言柔弱无能，行刚强有力。
Between twelve and eighty years we gradually lose this power;
除在12岁至80岁之间，我们逐渐丧失这种能力。