Diethylnitrosamine
二乙基亚硝胺
🗣️ 情景例句
Will he be OK, Dad?
他会没事吗， 爸爸？
When I saw Mr. Jones,he was talking with John Smith.
当我看见琼斯先生时，他与约翰·史密斯正在谈话。
Farm labourers said that they always woke up to find that work had been done overnight.
雇工们说，常常一早起来发现有人在夜里把活干了，