Heterocyclization
杂环化(反应)
🗣️ 情景例句
I happen to have
我这儿碰巧有一项
All bags contain an inner waterproof lining.
所有包内都有一层防水内衬。
the thought of rest will be not unwelcome.
有长眠的愿望未尝不是一件好事。