单词：melatonins
单词：melatonins 相关文章
Humans are pegged to a 24-hour cycle. We're locked into it not just by day and nighttheres the master timepiece in the brain called the circadian clock. But it doesn't make sense to live by a 24-hour clock in the Arctic, where it's dark or light for
Scientific American(三)月
Without a doubt, artificial light has made our lives more convenient. In fact, our modern civilization would not be possible without Edisons invention. However, scientists are recently discovering that there is a dark side to the artificial light tha
轻松英文阅读
(WA) Did you ever wonder why it is that most people are programmed to sleep at night instead of during the day? If there's something about the cycle of light and dark that's telling us when to sleep, then shouldn't the sleep cycle of a blind person
托福听力短文
人类按照24小时一循环的作息规律来生活，是因为大脑中有昼夜节律钟的协调。 研究发现，驯鹿等北极动物，在北极持续数周白天或黑夜里生活时，是没有昼夜节律钟的。 How Its Internal Clock I
60秒科学
A Fish That 'Sings' Love Songs? 是一种唱情歌的鱼？ This is the sound of a fish singing: 这是鱼唱歌的声音：嗯。。。 It is a male fish a plainfin midshipman, to be exact from the Pacific Ocean.He is singing, or humming, a love son
2016年VOA慢速英语(十)月
A Fish That 'Sings' Love Songs? This is the sound of a fish singing: Hmmmmmmmm. It is a male fish a plainfin midshipman, to be exact from the Pacific Ocean. He is singing, or humming, a love song to get female fish to come and visit the nest he built
2016年VOA慢速英语(十)月
SCIENCE REPORT – January 3, 2002: Seasonal Affective Disorder By George Grow This is the VOA Special English SCIENCE REPORT. Some people feel sad or depressed during the winter months in northern ar
科技之光
1. SLEEP NAKED 1.裸睡 As well heating you up too much, pyjamas can also be a distraction with tangled drawstrings, bunched-up bottoms and constrictive t-shirts. Maintaining a cool body temperature allows anti-ageing hormone Melatonin to do its work
阅读空间
Pre-Listening Vocabulary energized: feeling awake and ready to do something physical wardrobe: all of the clothing that you own serotonin: a chemical that affects ones moods melatonin: a hormone that helps you fall asleep endorphin: a hormone that ac
Facts-事实
Have you suffered from getting up? Are you a morning person? Well, Want to feel great and rejuvenated about life? After reading this post, you will know exactly how I (and many night owls) trained ourselves to wake up early, and also how your morning
阅读空间
脑白金到底是什么？ 褪黑素，又名黑素细胞凝集素，俗称为脑白金，是存在于从藻类到人类等众多生物中的一种荷尔蒙，它在生物中的含量水平随每天的时间变化而变化。 Melatonin, sometimes ca
英语听力文摘 English Digest