Diacetylmethane
[化] 乙酰丙酮
??? 情景例句
Shows insufficient evidence of achievement.
缺乏獲得成功的足夠依據。
John has extracurricular activities. He's on the football team.
約翰有課外活動。 他參加了足球隊。
Good morning, Mr. WU:?Here's my homework. I was ill on Monday, so it's late.
吳先生，早上好！這是我的英語家庭作業。我星期一病了，所以遲交。