欣喜若狂的英语:tread [walk] on air; gloat over; be as happy [joyful] as a lark; go [be] wild with joy; be entranced [frantic; mad; delirious] with joy [delight]; be in an ecstasy of delight [joy]; be in ...
欣喜若狂的法语:être fou de joie;déborder de joie;s'exalte être fou(transporté)de joie;déborder de joie;exulte