Preevacuating
前级真空的
🗣️ 情景例句
Hurt? What do you mean?
酸痛， 什么意思？
We know that you are leading exporters of coal and you can provide the quantity we need.
我们知道贵方是主要煤炭出口商，能满足我们的需求量。
Since that time, racing drivers have reached speeds over 600 miles an hour.
从那时以来，赛车选手已达到每小时600英里的速度。