translation.en: The first penguins to make that transition to free feeding were the ones that had a metal band on their wing from the Apollo Sea spill six years earlier.
translation.zh: 最早学会自己取食的 那批企鹅 正是翅膀上戴有金属条，经历过六年前阿波罗海 漏油事件获得救助的幸存者。