Polyethylenes
(polyethylene 的复数) n. 聚乙烯\\n[化] 聚乙烯
🗣️ 情景例句
Think globally, act locally.
放眼全球， 从自身做起。
If you don't aim high you will never hit high.
不立大志，难攀高峰。
What's that, Jim? Is it a picture?
吉姆，那是什么？一张照片？