Ethylal
乙醛
🗣️ 情景例句
Forgive me if I'm wrong, but haven't we met before.
如果我弄错的话请原谅我，我们以前见过面吧？
Where do you have your lunch?
你在哪儿吃午饭？
I left a suitcase on the train to London the other day.
几天前我把一只手提箱忘在开往伦敦的火车上了。