Cycloaddition
n. [化]环加成( 指不饱和分子化合成一环状化合物的反应)
🗣️ 情景例句
I took a month off for a holiday.
我休了一个月假。
Sure, what did you want to know?
真的，你想知道什么呢？
Draw your chair up to the table.
把你的椅子拉到桌子旁边来。