Macrocycle
(包含15个原子以上的)大环
🗣️ 情景例句
Very good. Please fill out this form.
很好，请填写这张表格。
I'm a federal employee. I work for the Department of Labor.
我是一个联邦雇员。 我为劳动部门工作。
I had not laughed since I became deaf.
我耳聋后就从来没有笑过。