Metaformaldehyde
[化]变甲醛, 聚甲醛
🗣️ 情景例句
And if you ever need Dad or me to help you ...
如果你们的确需要我和爸爸的帮助的话 ……
All the neighbors helped us move in.
邻居们都帮忙为我们搬家。
It is no matter whether you get there early or late.
你早到晚到都没有关系。