Divinylacetylene
[化] 二乙烯基乙炔
🗣️ 情景例句
That's very nice of you. Where did you get it? It's not a print.
真细心！你从哪儿弄来的？这还不是复制的呢！
No answer.
没有人接电话。
What do people eat in England?
在英格兰，人们吃什么？