Polycyclotrimerization
多环三聚(作用)
🗣️ 情景例句
We've been listening to you both.
我们一直在听你们朗诵。
A word spoken is an arrow let fly.
一言既出，驷马难追。
Hello! Could I speak to the headmaster, please?
您好！我能和校长通话吗？