Superpolymer
高聚物
🗣️ 情景例句
I had a busy day. I'm done.
我今天很忙，现在精疲力尽。
Please don't let the dog come in the house.
请别让狗进到屋子里。
I went on walking, bending down because the roof of the cave was not very high.
因为洞顶不是很高，我继续弯着腰往前走。