任何经实验室修改过的生物，不大可能在外界同经过自然选择的考验而生存下来的生物相竞争。
Any organism modified in a laboratory is unlikely to make it in the outside world in competition with creatures toughened up by natural selection.
为了在那里生存，美国宇航局喷气推进实验室设计的气球必须要经受得起零下180度左右的气温。
To survive there, a balloon, designed by Nasa's Jet Propulsion Laboratory, would have to withstand temperatures around -180c.
这项发现不仅揭示了鸡类大脑的情况，同时也表明了提高它们在饲养场与科学实验室中生存条件的重要性。
The discovery doesn't just shed lights on bird brains, it has important implications for the welfare of chickens in battery farms and science laboratories.
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