adj.不成功的；無結(jié)果的
Our efforts to persuade her proved fruitless. 我們努力說服她，但毫無成效。
His effort to woo her to his side prove fruitless. 他試圖說服她站到自己一邊的努力徒勞無功。
Their negotiation was fruitless. 他們的談判沒有結(jié)果。
His struggle with adversity is fruitless. 他徒與不幸掙扎而毫無結(jié)果。
adv.徒勞地；無益地
