Polyethylenes
(polyethylene 的复数) n. 聚乙烯\\n[化] 聚乙烯
🗣️ 情景例句
What do you mean?
是什么意思？
Joy and sorrow are next-door neighbours.
是喜是忧难以分。
Everything that happened was my fault.
所有的事都是我的错。