Cephalomycin
头霉素
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
Without wisdom wealth is worthless.
如果没有智慧，财富就无价值。
No, not very. You need a driving permit. Have you got one?
不，不很贵。你需要一个驾驶执照。你有没有？