Polypentamethylene glutaramide
[化] 聚亚戊基戊二酰胺
🧩 词语组成解析
戊二(酸)酰胺
🗣️ 情景例句
You can listen to BBC or VOA news if you want to improve your listening.
如果你想提高听力，你可以听英国广播电台或美国之音的新闻节目。
Mr. Chairman, may I have the floor?
主席，我可以发言吗？
Last summer I spent days in the garden watching thousands of ants crawling up the trunk of my prize peach tree.
去年夏天，我花了好几天时间站在花园里观察成千只蚂蚁爬上我那棵心爱的桃树的树干。