Polyformaldehyde
聚甲醛
🗣️ 情景例句
Have you ever owned an animal?
你曾养过动物吗？
Could you give us detailed descriptions of the capabilities of your product?
请你把你们产品的性能给我们详细说明一下好吗？
Let me give you an indication.
我可以提示一个想法。