Dipolymer
[化] 二元共聚物
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
Pleasant dreams!
愿您睡得香甜！
as by falling into inaccessible caves, or into an ice crevasse, like the Siberian mammoths,
如掉进难以到达的洞穴，或掉进冰河裂缝里，或者像西伯利亚长毛象那样掉进冰窟中，