Prepurging
洗炉, 清炉(清除炉内气体)
🗣️ 情景例句
Then, when shall we sign the contract?
那么，我们什么时候签合同？
They jumped at the unexpected noise.
他们因突如其来的声音吓得跳了起来。
Yes, that's right! Where did you see it?
对，没错！你在哪见过吗？