Biformyl
[化] 乙二醛
🗣️ 情景例句
I came to spend some time with my favorite nephew.
我来是为了和我心爱的侄儿相聚一些时间。
I don't know where I've seen him before.
我不晓得在哪儿见过他。
The next evening the man upstairs came home from work late as usual.
第二天晚上，楼上人和平时一样很晚才下班回家。