Metaformaldehyde
[化]变甲醛, 聚甲醛
🗣️ 情景例句
How come you look so tired?
你怎么看起来这么疲倦？
For a lost thing care nothing.
一事之失，不必介意。
The shape and dimensions of the skyscrapers depend entirely on the necessity of obtaining the maximum income per square foot of ground,
每平方英尺地皮取得最大收入