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
What was your best subject in college?
大学时你哪门功课最好？
Mr. Smith is a politician.He's running for election as governor.
史密斯先生是竞选州长的一名政治家。
Though she hesitated for a moment, she finally went in and asked to see a dress that was in the window.
她虽然犹豫了片刻，但终于还是走进了商店，要求把陈列在橱窗里的一件衣服拿给她看。