Preoperation
空转, 试运行, 试运转
🗣️ 情景例句
When's the next class?
下一次上课什么时候？
It's a hard job, but I hope he can make it.
这不是件容易的差事，但我希望他能做到。
What about vegetables, Sir? They usually go bad as soon as we are at sea.
那些蔬菜怎么办呢，先生？通常是刚一出海它们就会坏掉的。