Diacetylene polymer
[化] 二乙炔聚合物
🧩 词语组成解析
联乙炔, 丁二炔
🗣️ 情景例句
We will help your children in learning lessons in their free time.
我们可以帮助您的孩子在他们空闲时学习功课。
It's a beautiful country with many large rivers.
这个国家很美，它有很多大河。
Even if you travel in ideal weather, sea journeys take a long time.
即使风平浪静，坐船旅行也要占用很长时间。