柯林斯詞典whiten /?wa?t?n/ (whitening,whitened,whitens) 1. V-T/V-I When something whitens or when you whiten it, it becomes whiter or paler in colour. 變白; 使變白 Her knuckles whiten as she clenches her hands harder. 她的手握得越來越緊，指節(jié)都變白了。 ...toothpastes that whiten teeth. ...增白牙膏。 返回 whiten劍橋詞典to make or become whiter （使）變白 She had her nicotine-stained teeth whitened. 她將她那被尼古丁燻黑的牙齒漂白了。 Her hair had whitened over the years . 這麼多年來她的頭發(fā)已經(jīng)變白了。 返回 whiten