Polyacetylen
聚乙炔; 聚乙炔
🗣️ 情景例句
I hope it isn't important.
希望不是什么重要事。
You don't have any strong feelings about it?
关于这件事，你没有什么意见吗？
Dancing proved to be more than the dish could bear, for during the party it capsized and sank in seven feet of water.
舞会进行过程中，盘子倾覆，沉入了7英尺深的水中。