Polydiolefin
聚二烯烃
🗣️ 情景例句
Good-bye.
再见。
All is fish that comes to his net.
到了网中都是鱼；只要到手全都要。
Mrs.Richards sent her children to school and went upstairs to her bedroom.
把孩子送去上学，然后来到楼上自己的卧室。