infructuous
美
英 
英漢解釋
例句
I think, no matter be pushed to the person that does not need information with what means, sending commerce message is infructuous .
我認為,無論以什么方式向不需要信息的人推送商業信息都是徒勞。
If rely on and so on of cereal, legume, potato to reduce weight, that will be infructuous .
假如靠谷物、豆類、土豆之類減肥的話,那將是徒勞的。