laziness ['leɪzɪnəs]

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附加级

n.怠惰，懒散，徐缓

As rust is to iron,so is laziness to man. 懒惰对于人好比铁生了锈。来自《简明英汉词典》
The primary cause of Tom's failure is his laziness. 汤姆失败的根本原因是懒惰。来自《简明英汉词典》