Polythiourea
聚硫脲
🗣️ 情景例句
I don't know why I didn't think of it.
我不知道为什么我没有想到这一点。
The ass wags his ears.
自鸣得意。
While we were having breakfast, our little boy, Tommy, found two small coins on the floor.
正当我们吃早饭时，我们的小男孩汤米在地上找到两枚小硬币。