Urstoff
[德]物质单元, 原质
🗣️ 情景例句
The important thing is that you tried.
重要的是你已经努力过了。
Ignorance of the law excuses no man.
对法律不知不能免罪。
You'd better finish the work today, and bring it tomorrow.
你最好今天完成这作业，明天把它带来。