Leakproof pump
[化] 密封泵
🧩 词语组成解析
a. 防漏的, 不漏的\\n[化] 防漏的
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 do mean it.
我的确是说真的。
If you work in a factory,you usually have to punch a clock.
如果你在一个工厂里工作，你通常必须打卡。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。