听力文本

Why Do Graveyard Shifts Wreak Havoc on Human Metabolism?
夜班会严重破坏人体的新陈代谢？
Humans are wired to be awake during the day and sleep at night, but millions of Americans defy biology to pull the graveyard shift.
人类本来白天活动，晚上睡觉，但是数百万名上夜班的美国人却无视这一生物规律|HckQ07PCXh。
Hospital employees, firefighters and, increasingly, office workers all punch in for nighttime work.
值夜班的医生，火警以及越来越多的白领都开始在夜间工作__OnIHg6kI4hZgyq。
These nocturnal schedules appear to be one driver of the rising rates of obesity and metabolic disorders.
这些不规律的作息时间会使人患肥胖、代谢紊乱的风险增加ytMXtw*a5z^H4zCf。

Yet exactly how swapped slumber time fuels metabolic disarray has largely mystified sleep researchers.
什么样的睡眠时间才能调节代谢紊乱一直困扰着睡眠研究人员~_G.%UdJ2;)9Mq#,g^。
Daytime shuteye, for one reason or another, simply is not as restful for humans.
从某种原因来说，白天并不是人类睡觉的最佳时间*560qtYi4#x6Y;ntDv。
But is it the massive sleep debt that never gets repaid or disruptions to circadian rhythms that can foster health problems?
难道不是由于长期睡眠不足或昼夜颠倒的作息而导致健康问题频出吗？
Whatever the cause, the end result can be a murky cycle of excessive fatigue, hormonal changes that lead to more snacking and,
不管原因是什么，最终的结果都会变成过度疲劳的恶性循环，激素紊乱导致饮食不规律，
eventually, weight gain and higher rates of metabolic disorders like diabetes.
最后体重飙升，患糖尿病等代谢紊乱疾病的风险增加WQ;sL=W5b8tgdd。
Understanding the root of the problem, however, may one day lead to better therapies to help prevent these disorders.
既然已经发现了问题的根源，也许有朝一日能发现预防这一疾病的良方-&BB#K|^2)4@7qIE(L;。

译文属可可英语原创，未经允许，不得转载FM[Qc+b-RpklCznE。

词语解释

1.millions of 无数的

例句：Millions of people gave freely in response to the famine appeal.
千百万人响应救灾呼吁而慷慨解囊;^W,(f[D4GtCt2Wd2%]q。

2.office workers 上班族

例句：Most office workers commute from the suburbs.
很多公司的职员都是从郊外来上班的@fQ4^mY|+vOjz。

3.punch in 上班打卡

例句：What time do you punch in in the morning?
你早上几点打工卡上班?

4.lead to 导致

例句：Blindly copying others might very well lead to losses.
盲目搬用别人的经验很容易造成损失,e.8kJG[)IHsL。