thoughtlessly ['θɔ:tləslɪ]

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附加级

adv.草率地，不体贴地；混；等闲

He treated his parents thoughtlessly. 他非常不关心他的父母。来自《简明英汉词典》
The principle is repeatedly and thoughtlessly violated. 这条原则被一再无情地违犯着。来自辞典例句