fruitless汉语翻译：
a. 不结果的, 不长果实的, 无子的词型变化：
名词:fruitlessness副词:fruitlessly英语解释：
形容词 fruitless:

unproductive of success同义词：bootless, futile, sleeveless, vain

例句：

All my efforts were fruitless.我所有的努力都白费了。

So far the search for the missing boy has been fruitless.到目前为止，还没有找到那失踪的男孩。

His struggle with adversity is fruitless.他徒与不幸挣扎而毫无结果。

Their negotiation was fruitless.他们的谈判没有结果。

详细解释：
fruit.less
adj.（形容词）
Producing no fruit.
不结果实的
Unproductive of success:
徒劳的：不产生益处或好处的：
例句：
a fruitless search.See Synonyms at futile
毫无结果的研究参见 futile
【引伸】
fruit.lessly
adv.（副词）
fruit.lessness
n.（名词）

fruitless