Forepump
前置真空泵, 预抽真空泵
🗣️ 情景例句
What guarantee do I have that it won't break down easily?
有什么保障它不会轻易出故障？
Quality matters more than quantity.
质重于量。
For a time it assumes a miraculous individuality that,
一度它获得非凡的个性，