Polyacetylen
聚乙炔; 聚乙炔
🗣️ 情景例句
do you take Harry Bennett
愿意接受Harry bennett
He that serves God for money will serve the devil for better wages.
求财而供神者必倍求而敬鬼。
We spent all our days on the beach.
我们有好几天都是在海滩上度过的。