Polyethylenes
(polyethylene 的复数) n. 聚乙烯\\n[化] 聚乙烯
🗣️ 情景例句
He couldn't take time off to come to New York with me.
他走不开 没办法和我一起来纽约。
His courage is a lesson to us.
他很有勇气，是我们大家的榜样。
Jim, is this your cup?
吉姆，这是你的杯子吗？