Polyethylenes
(polyethylene 的复数) n. 聚乙烯\\n[化] 聚乙烯
🗣️ 情景例句
What happened?
发生了什么事？
That cat judged the distance before he leapt across the ditch.
猫在越过沟渠以前便判断好其距离了。
No matter how much you want to bathe, it just isn't safe.
不管你多想在这里游泳（都不要游），这里不安全。