Polyepoxide
聚环氧化物
🗣️ 情景例句
And this is Alexandra Pappas.
这位是Alexandra Pappas。
It was after dark when we got back,and we were all tired.
我们回来时天已经黑了，并且我们都很疲倦。
For instance, if you are older you have less time to recover from any major losses,
比如说，如果你年纪较大，你从重大投资损失中恢复过来的时间就较少，