As mammals evolved they lost the ability to regrow, or regenerate, parts of their body. However, experiments show that it may be possible to regain that ability.

随着哺乳动物的进化，它们失去了再生身体某一部分的能力。然而，实验表明它们有可能重新获得这种能力。

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Sometimes happy endings are sad, involve loss and disappointment, teach us that we can't control anyone or their behavior or show us that we are limited in our ability to heal or change others.

有时快乐结局是令人悲伤的；可能也会令人遭受损失和失望；教会我们不能去控制别人和他们的行为；或是让我们知道我们去疗愈或改变他人的能力不足。

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Although there are specific disciplines that follow trained approaches to working in Lean or Agile environments, the average worker or small business owner still needs to be able to show evidence of their ability to respond quickly and effectively to changes or unforeseen events.

FORBES: Be Responsive To Improve Your Career

"Ever since the launch of Timeline, people have had the ability to control what posts they want to show or hide on their own Timelines, and today we're extending that to other information they post, starting with the Facebook address, " the Facebook spokesperson added.

CNN: Facebook just switched your default e-mail address

Mr. PELTON: Blackwater has always prided themselves on their aggressive stance, their ability to show force, and whether it's using armored vehicles or using heavy weapons.

NPR: Oversight of Blackwater a 'Grey Zone,' Author Says