Polyyne
聚炔烃
🗣️ 情景例句
I'm sorry. Really, I'm sorry.
我为你难过 真的为你难过。
So he keeps on studying after his English classes in order to prepare for life in America.
所以他在英语课下课后还继续学习，为以后在美国生活做准备。
All these years, Eric had lived as a recluse.
这些年来，埃里克过着隐士生活，