n.树獭；懒惰
He has kept sloth out. 他已经克服了懒惰。
Sloth is one of human being's weaknesses. 人性的弱点之一是懒惰。
adj.怠惰的；懒惰的；迟钝的
n.怠惰；懒惰
adv.怠惰地；懒惰地
