unfruitful
例子
Despite numerous attempts, their unfruitful efforts to find a solution left them feeling frustrated and discouraged.
尽管多次尝试，他们为寻找解决方案所做的徒劳努力让他们感到沮丧和灰心。
The unfruitful negotiations between the two parties led to a stalemate in reaching a compromise.
双方之间无果的谈判导致在达成妥协方面陷入僵局。
词汇树
unfruitful
fruitful
fruit
