Dena
[医][=diethylnitrosamine]二乙基亚硝胺
🗣️ 情景例句
Are you here on business or for pleasure?
你来这儿是出差还是游玩？
Steady wins the race.
从容就是赢得比赛的诀窍。
I don't doubt that he will help me.
我不怀疑他会援助我。