showing a reckless lack of care or attention
不加注意的,掉以轻心的,三心二意的
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‘Elaine!’ she shouted, heedless of attracting unwanted attention “伊莱恩!”她大声喊道,全然不在意会引起不必要的注意
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his heedless impetuosity. 他的漫不经心的急躁。