Perfluamine
全氟三丙烷
🗣️ 情景例句
Nowadays many TV programs need parental guidance.
现在许多电视节目需要在家长指导下观看。
I have a dog, but it's very quiet.
我有一只狗，不过它很安静。
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，