Some of the chemicals that are all around us have the ability to interfere with our endocrine systems, which regulate the hormones that control our weight, our biorhythms and our reproduction.

我们周围的某些化学物质会影响人体的内分泌系统——其作用是通过调节激素分泌从而控制体重、生理周期以及生殖能力。

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Ultimately, they expect to find that many different genes play a role, which may in turn reveal more about the complex systems that regulate sleep in humans.

他们期望最终能找到许多不同的基因发挥的作用，也许从中能揭示出更多有关这一复杂系统调节人类睡眠的秘密。

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The systems in the brain that help us deal with stress and regulate fear and emotional responding are changed as you might expect in response to the extreme trauma of combat.

那些帮助我们应对压力，控制恐惧等情绪反应的大脑机制发生了变化，病人仿佛期待着极度痛苦的创伤事件不断重演并作出回应。

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In 2012 the FAA established the Unmanned Aircraft Systems Integration Office to figure out how to certify and regulate drone traffic in U.S. airspace.

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