柯林斯词典whiten /ˈwaɪtən/ (whitening,whitened,whitens) 1. V-T/V-I When something whitens or when you whiten it, it becomes whiter or paler in colour. 变白; 使变白 Her knuckles whiten as she clenches her hands harder. 她的手握得越来越紧，指节都变白了。 ...toothpastes that whiten teeth. ...增白牙膏。 返回 whiten剑桥词典to make or become whiter （使）变白 She had her nicotine-stained teeth whitened. 她将她那被尼古丁熏黑的牙齿漂白了。 Her hair had whitened over the years . 这么多年来她的头发已经变白了。 返回 whiten