Acetylacetonate
乙酰丙酮化物
??? 情景例句
That's impossible.
不可能。
He has been working in advertising for ten years, but now he is teaching.
他曾經在廣告公司服務十年，但現在在當老師。
We swam and dived off the rocks into the sea.
我們從巖石上跳進海里游泳。