Negamycin
负霉素
🗣️ 情景例句
Then an adult must sign for you.
那就必须有一位成年人来替你签字。
I sometimes stay up till midnight.
我有时候熬到半夜。[一般现在时]
The young man did not wake up until the bed had struck the ground.
那年轻人直到床撞到地上才醒了过来。