toil with no gain;a fruitless attempt;All one's efforts came to naught.;exert oneself to no purpose ;

They attempted in vain to modernise these antiquated industries.
他们企图使这些陈旧的工业现代化,结果劳而无功.
来源:《简明英汉词典》Book of Kundanili tells us; don't try to control activities of thinking, which is in vain.
“挫火”一书告诉我们, 别妄想自己能控制思绪的飞扬,游走, 因为那将是徒劳而无功的.
来源:互联网摘选He died for Germany in the gigantic and futile operation called Citadel.
他在被称为“城堡”行动的一次大规模的劳而无功的战役中阵亡.
来源:词典精选例句After years of frustrated efforts I was wild to accomplish things-and twenty-eight years old.
过去几年,我劳而无功,到这时,已经 二十八 岁了.心中怀着强烈的欲望,想有一番作为.
来源:词典精选例句The teacher's attempts at enlightenment failed ; I remained as confused as before.
老师虽尽力开导却 劳而无功 ,我仍像以前一样糊涂.
来源:网络文摘精选
简答网 · 四六级英语

简答网 · 双语娱乐资讯

简答网 · 初中英语作文

简答网 · 初中英语作文

简答网 · 高考英语

简答网 · 双语娱乐资讯