Polyethylenes
(polyethylene 的复数) n. 聚乙烯\\n[化] 聚乙烯
🗣️ 情景例句
Involve the entire family in a reading project.
让整个家庭都参与阅读计划。
It's already in production, so you can expect it in stores before the end of the month.
产品已投产了，所以月底前你可以获得。
He goes to Chinese classes every week.
他每周都要去上汉语课。