Nitrocementation
碳氮共渗
🗣️ 情景例句
I can speak Shanghai dialect other than Cantoness.
除了广东话，我还能讲上海话。
Perseverance is failing nineteen times and succeeding the twentieth.
十九次失败，到第二十次获得成功，这就叫坚持。
That's not allowed. Once you are in here, listen to your teacher.
那是不允许的。一旦进来了，你们要听老师的话。