be a tax on (one's mind);bother;trouble;pay attention ;

I think you'veadopted an incorrect method, since you've made no progress from your great energy.
你整天劳神费力的也不见有进展,我觉得是方法问题.
来源:互联网摘选Anything less than 10 percent is not worth the trouble because of such heavy expenses.
由于费用太高,因此如果佣金低于10%,我方就不值得劳神了.
来源:互联网摘选Even the most intrepid World Cup fan will struggle to watch all 48 first-round matches.
即使是世界杯最铁杆的球迷,要将首轮48场比赛一气看完,绝对是费心劳神的事.
来源:互联网摘选
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