Prodag
半胶态石墨悬浮液
🗣️ 情景例句
Philip, do you have the key to the trunk?
Philip衣箱的钥匙在你那吗？
The population of Africa is growing by leaps and bounds.
非洲的人口正在极其迅速地增长。
Yes, of course.
当然一样。