Levulinate
乙酰丙酸
🗣️ 情景例句
I know it.
我知道。
Someone is working in the manhole.
有人在
William S.hart was, perhaps, the greatest of all Western stars, fro unlike Gary Cooper and John Wayne he appeared in nothing but Westerns.
威廉。哈特大概是美国西部电影明星中的佼佼者。他和加里。 古柏、约翰。韦恩不同，他只在西部电影中扮演角色。