Polyyne
聚炔烃
🗣️ 情景例句
The problem is that I'm a photographer, not an editor.
问题是我是一个摄影师 不是一个编辑。
I ask him to tell me everything he heard.
我要求他告诉我，他所听到的每件事情。
An ancient bus stopped by a dry river bed and a party of famous actors and actresses got off.
一辆古旧的汽车停在一条干涸的河床边，一群著名男女演员下了车。