Polypak
苯乙烯、二乙烯苯共聚物
🗣️ 情景例句
And make them here.
在这儿缝。
I invited him to come over, but he wouldn't.
我请他过来，但是他不肯。
I often fish for hours without catching anything.
我经常一钓数小时却一无所获，