Terpolymerization
三聚作用
🗣️ 情景例句
What beautiful timing.
时间正合适。
The day is long to him who knows not how to use it.
百无聊赖。
She watched TV for half an hour after supper. Then she started her homework.
晚饭后她看了半小时电视。然后她开始做家庭作业。