unfruitful
「unfruitful」的意思
adj. 不结果实的；无效果的；不生子女的；徒然的
adj.不结果实的,不生子女的,无效果的,徒然的,空的
「unfruitful」的用法
unfruitful无成效的，不结果实的 - 形容某事或某人没有达到预期的效果或目标。
「unfruitful」的例句
The project was unfruitful.
这个项目没有结果。
He spent years working on a project that was ultimately unfruitful.
他花了几年时间在一项最终没有结果的项目上工作。
The teacher's efforts were unfruitful in changing the students' attitudes.
老师的努力在改变学生的态度上没有结果。
The company's new marketing campaign was unfruitful.
公司的新营销活动没有结果。
After months of research, they found that their experiment was unfruitful.
经过几个月的研究，他们发现他们的实验没有结果。
The politician's promises were unfruitful in winning the election.
政客的承诺在赢得选举上没有结果。
The writer's novel was unfruitful in selling copies.
作家的小说没有卖出拷贝。
Her efforts to improve her health were unfruitful.
她努力改善健康没有结果。
The company's new product launch was unfruitful.
公司的新产品发布没有结果。
The artist's paintings were unfruitful in selling.
艺术家的画作没有卖出。