Tripropyl
三丙基
🗣️ 情景例句
Do you love me?
你爱我吗？
How much is the excess baggage charge?
超额行李费多少钱？
Hello. You must be Dr Yang. How do you do? My name's David Lee.
嗨。你一定是杨博士吧。您好！我是大卫·李。