Pentalkylated
五烃基代的
🗣️ 情景例句
Remember our first fishing trip?
还记得我们第一次去钓鱼吗？
My favorite bone!
我最喜爱的骨头！
Perhaps it will solve my problem, but I just haven't had time to read it!
也许这本书能解决我的问题，但我一直还没时间去看这本书！