“无心的”的英语可以翻译为：inadvertently，unintentional，unwittingly，[医] acardiac，involantary ...

可这无心的噪音已引起注意她 呢 ?Could this unintentional noise have attracted attention to her?这个磨床是无心的(无心磨床),由此不定位于任何中心.The grinder is centerless therefore not locating on any centers.在忙乱中任何人都能犯无心的过失.Anybody can make an honest mistake...