Metaformaldehyde
[化]变甲醛, 聚甲醛
🗣️ 情景例句
I haven't got a clue on how to spend the National Day holiday.
如何度过国庆假期我还没有一点头绪。
Thank you.
谢谢。
The are no batteries in the radio.
收音机里没电池。