Carbusintering
渗碳烧结
🗣️ 情景例句
No, no. Please, go ahead.
不用 ，不用。你走吧。
She has always a gracious smile.
她脸上总是带着和蔼可亲的微笑。
I'll wanted to see your factory for a long time.
好久就想来看看你们的工厂了。