whiten
/ˈwaɪtn/ 3When something whitens or when you whiten it, it becomes whiter or paler in colour. 变白; 使变白
verb [vt. 及物动词]vt. 漂白；刷白
Her knuckles whiten as she clenches her hands harder. 她的手握得越来越紧，指节都变白了。
verb [vi. 不及物动词]vi. 变白
"It's amazing to think that just 60 years ago, we knew next to nothing of the behavior of our sister species in the wild," Whiten says. “就在60年前，我们几乎对自己野生姐妹物种的行为一无所知，真是令人惊讶。”怀滕说。
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