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[科学美国人60秒] SSS 2015-11-24

时间:2015-11-26 06:15来源:互联网 提供网友:yajing   字体: [ ]
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 this is scientific american 60 seconds science. i'm (name). got a minute? this thanksgiving as you savor1 your turkey in stuffing, you have something else to give thanks for: the army of microbes that help you digest the feast.cause when you eat you are feeding them too, and triggering an enormous bloom of gut2 bacteria. in fact as many as a billion new ecoli bacteria may come into being during one of those feeding frenzies3, but 20 minutes after the population explosion begins, the bacteria reach critical mess and put on the brakes. and when they enter that resting state, they start pumping out a particular sweet of proteins. researchers harvest those post pamdio protein from ecoli and add them to the ecoli of rats. and the proteins appear to interact with the andiqun cells in the gut, flapping on the production of hormones4 and tell the brain:" hey, stop eating. we're full." meanwhile, mice injected with ecoli proteins over the course of a week ate less of each meal. though they compensate5 by eating more often. all of which suggests that the proteins product by bacteria can influence and even interference with our sense of feeling stuffed. the study is in the journal "cell metabolism6". as far as overeating girls, the researchers say we probably won't inject people with bacteria appetites presence any time soon, but it might be worth paying closer attention to the health and composition of our gut bacteria. since they do appear to play in a role of regulating our eager to eat. so as you are stuffing yourself with stuffing on Thursday, you might ask yourself :"what would my gut bacteria want?"


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1 savor bCizT     
vt.品尝,欣赏;n.味道,风味;情趣,趣味
参考例句:
  • The soup has a savor of onion.这汤有洋葱味。
  • His humorous remarks added a savor to our conversation.他幽默的话语给谈话增添了风趣。
2 gut MezzP     
n.[pl.]胆量;内脏;adj.本能的;vt.取出内脏
参考例句:
  • It is not always necessary to gut the fish prior to freezing.冷冻鱼之前并不总是需要先把内脏掏空。
  • My immediate gut feeling was to refuse.我本能的直接反应是拒绝。
3 frenzies ced12cd0ff4bec931ee663d57f5c5452     
狂乱( frenzy的名词复数 ); 极度的激动
参考例句:
4 hormones hormones     
n. 荷尔蒙,激素 名词hormone的复数形式
参考例句:
  • This hormone interacts closely with other hormones in the body. 这种荷尔蒙与体內其他荷尔蒙紧密地相互作用。
  • The adrenals produce a large per cent of a man's sex hormones. 肾上腺分泌人体的大部分性激素。
5 compensate AXky7     
vt.补偿,赔偿;酬报 vi.弥补;补偿;抵消
参考例句:
  • She used her good looks to compensate her lack of intelligence. 她利用她漂亮的外表来弥补智力的不足。
  • Nothing can compensate for the loss of one's health. 一个人失去了键康是不可弥补的。
6 metabolism 171zC     
n.新陈代谢
参考例句:
  • After years of dieting,Carol's metabolism was completely out of whack.经过数年的节食,卡罗尔的新陈代谢完全紊乱了。
  • All living matter undergoes a process of metabolism.生物都有新陈代谢。
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