酮

tóng 〔名〕有机化合物的一类,通式RCOR′。由一个羰基和两个烃基连接而成,如丙酮(一种溶剂)。[英ketone]

• 失败
• 失足
• 失踪
• 失身
• 失迎
• 失道寡助
• 失重
• 失陪
• 失陷
• 失魂落魄
• 头
• 头人
• 头伏
• 头发
• 头号
• 头头儿
• 头头是道
• 头头脑脑
• 头套
• 头子
• 头寸
• 头巾
• 头油
• 头班车
• 头疼
• thetower
• the tower of babel
• the-tower-of-babel
• the tower of london
• the-tower-of-london
• the town
• the town mouse and the country mouse
• the-town-mouse-and-the-country-mouse
• the trade
• the trade descriptions act
• the-trade-descriptions-act
• the trades union congress
• the-trades-union-congress
• the traditional wisdom
• the trail of tears
• the-trail-of-tears
• the training and enterprise council
• the-training-and-enterprise-council
• the tramp of boots
• the tramp of feet
• the tramp of feet/boots
• the trans-am championship
• the-trans-am-championship
• the trans am championship
• the transamerica building