Preboiler
预热锅炉
🗣️ 情景例句
She's always changing jobs.
她老是换工作。
You (or One) cannot make a silk purse out of a sow's ear.
粗瓷碗雕不出细花来。
I've worked here since 1989.
我自1989年以来便在这家工厂工作了。