Dena
[医][=diethylnitrosamine]二乙基亚硝胺
🗣️ 情景例句
You got it.
答对了。
Never put off till tomorrow what you can do today.
今天能做的事绝不要拖到明天。
The man on the motorbike was travelling too fast.
摩托车上的人开得太快。