Dtb
[医][=2，4-dithiobiuret]2，4-二硫代缩二脲
🗣️ 情景例句
Sorry, I just like to watch almost all kinds of ball games. I'm strictly spectator.
对不起，我仅仅喜欢观看几乎所有的球类比赛，我是个十足的观众。
It is a good horse that never stumbles.
良马不失蹄。
The captain learnt from the letter that the name of the lost ship was the Karen.
从这封信中船长了解到沉船船名是“卡伦”号。