unfruitful的用法和样例：

例句

用作形容词(adj.)

After a period of unfruitful time waiting for a kidney, the poor girl died.该女生在医院里等待肾脏捐赠无果后死亡。
They have been unfruitful in their efforts.他们都徒劳而归。
This kind of video does not have commercial value, unfruitful raise bandwidth cost.这类视频没有商业价值，又徒然增加带宽成本。

【近义词】

fruitless不成功的
sterile贫瘠的
unsuccessful不成功的
unprofitable没有利润的
unproductive不生产的
unrewarding无报酬的
vain自负的
infertile贫瘠的
barren贫瘠的
bare赤裸的
childless无儿女的

【反义词】

fruitful多产的

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