Diisopropylphosphorofluoridate
异氟磷
🗣️ 情景例句
It's almost lunchtime, and no fish yet.
差不多到午餐时间了， 还没钓到鱼。
He who would climb the ladder must begin at the bottom.
爬梯必须从底层开始。
Where are you from then ? Canada?
那么你是从哪里来的呢？加拿大？