adv.徒勞地；無益地

His struggle with adversity is fruitless. 他徒與不幸掙扎而毫無結(jié)果。

Their negotiation was fruitless. 他們的談判沒有結(jié)果。

So far the search for the missing boy has been fruitless. 到目前為止，還沒有找到那失蹤的男孩。

I'm sorry you've had a wasted (ie unnecessary, fruitless) journey. 很遺憾你白跑了一趟。

His efforts to woo her to his side proved fruitless. 他試圖說服她站到自己一邊的努力徒勞無功。