Polyolefin acid
[化] 聚烯酸
🧩 词语组成解析
n. [化]聚烯烃
🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
Life is a battle from cradle to grave.
人生是一场从生到死的战斗。
One moment we were walking along the top of a hill and now we could see no more than about thirty metres ahead of us.
一时间我们还在山顶上行走，而现在30公尺开外的地方我们都看不清了。