Polyacrylics
聚丙烯酸化物; 聚丙烯酸化物
🗣️ 情景例句
Typing is easy once you get the hang of it.
一旦你掌握诀窍，打字就很简单。
He who pays the piper, calls the tune.
谁负担费用，谁加以控制。
Busmen have decided to go on strike next week.
公共汽车司机决定下星期罢工。