Oxypropylation
丙氧基化作用
🗣️ 情景例句
Get to the point.
请进入正题。
What do you going to wear today?
你今天穿什么衣服？
Ever since, people have had difficulty in deciding whether the craft should be ranged among ships,
自那以后，人们很难决定是否应该将这种运载工具列为轮船、