Preoperation
空转, 试运行, 试运转
🗣️ 情景例句
His car's burning oil.
他的车烧油。
I guess I've outgrown this pair of trousers.
我想这条裤子对我来说小了。
That's not allowed. Once you are in here, listen to your teacher.
那是不允许的。一旦进来了，你们要听老师的话。