Metaformaldehyde
[化]变甲醛, 聚甲醛
🗣️ 情景例句
Should children be allowed to watch violent movies?
小孩可以看暴力片吗？
You know the proverb, Smile and the world smiles with you, cry and you cry alone.
要知道有句格言“微笑，世界与你同欢乐；哭泣，你只能独自悲伤”。
I'm full, thank you.
我饱了，谢谢你。