Nitrocementation
碳氮共渗
🗣️ 情景例句
Will you see him again?
你会再见他吗？
They have different hopes.
他们有各自不同的愿望。
Hold on for a moment, please. I'm sorry he isn't here right now. May I help you?
请稍等一下。对不起，他现在不在这里。我能帮您的忙吗？