unfruitful

英语音标

英语翻译

adj.无效果的；徒然的；空的

英语例句

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。