Downstroke
[冶]下行程(结晶器), [机]下行冲程
🗣️ 情景例句
I will.
我来。
Hello. Can I speak to Yolanda,please?
喂，我找约兰达讲话，可以吗？
Please give them all my best wishes. I hope Polly is well, too.
请向他们转达我的最良好的祝愿。我还希望波利也很好。