Polypak
苯乙烯、二乙烯苯共聚物
🗣️ 情景例句
it's going to be too late when I do remember.
等我想起来时已经太晚了。
Mr. Wagner, do you have a hotel reservation?
华格纳先生，你预订过旅馆吗？
Take care of yourself.
照顾好你自己。