Polycyclotrimerization
多环三聚(作用)
🗣️ 情景例句
May I have your name and number, please?
请问你的姓名和电话号码？
She was so stunned, that she couldn't speak.
她惊愕得说不出话来。
I don't know whether you realize it, but this condition is essential to us.
我不知道你是否了解，但是，这个条件对我们是必要的。