Metaformaldehyde
[化]变甲醛, 聚甲醛
🗣️ 情景例句
I want to pick up the car tomorrow morning at seven. Are you open then?
我想在明天早上7点提车。那时你们开门了吗？
I dress my sister and wash her hands and face.
我给我妹妹穿衣服，洗脸洗手。
A long time ago, one of his ancestors who lived in Africa went into the forest to cut down a tree to make a drum.
很久以前，他那生活在非洲的祖先中有一人走进森林去砍树来做鼓。