渐变折射率光纤

科学美国人60秒 SSS High Fiber Diet Keeps Intestinal Walls Intact

Your nose may be the first place you think of as a source of mucus. But mucus is a major player in your gut, too. There's antimicrobial peptides and proteins that are present in there. Bacteria live in there and forage on the carbohydrates. And it's

发表于:2018-12-24 / 阅读(50) / 评论(0)

2016年Scientific American(十一)月

EDUCATION REPORT - Computer Graded Writing

EDUCATION REPORT - Computer Graded Writing By Nancy Steinbach Broadcast: Thursday, August 12, 2004 This is Steve Ember with the VOA Special English Education Report. Last year, a report by a committee

发表于:2019-01-06 / 阅读(64) / 评论(0)

教育与新闻

2007年VOA标准英语-Study Shows High Fiber Diet Not More Helpful Fi

By Melinda Smith Washington 18 July 2007 We are going to find out about two studies on breast cancer. One studied whether a diet very high in fiber and low in fat could reduce the risk of recurring breast cancer. Another study focused on women with a

发表于:2019-01-12 / 阅读(90) / 评论(0)

2007年VOA标准英语（七月）

美国国家公共电台 NPR The FDA Will Decide Whether 26 Ingredients Count As Fiber

RACHEL MARTIN, HOST: The Food and Drug Administration is set to decide soon on a matter that could help you rethink fiber. Yeah, we're talking about fiber. We're told to eat a whole lot more of it. It's good for us, right? But what exactly counts as

发表于:2019-01-16 / 阅读(59) / 评论(0)

2017年NPR美国国家公共电台10月

TED演讲:碳水化合物是怎么作用于你的健康的(2)

Consider starch and fiber, both polysaccharides, both derived from plants, 拿淀粉和纤维来说，它们都是多糖，都是从植物中获得的， both composed of hundreds to thousands of monosaccharides joined together, 也都由成百上千个

发表于:2019-01-17 / 阅读(24) / 评论(0)

TED演讲教育篇

2014-02-11&02-13 “滑雪女神”林赛·沃恩因伤告别索契称和伍兹恋爱最快乐

Now to Olympic Skiing star Lindsey Vonn opening up about her insecurities off the slopes. Speaking herself magazine about its what it's like the red carpet with women hampherside. ABC's Jojo Chen. She is over here, what the story the morning, Jojo. G

发表于:2019-01-29 / 阅读(53) / 评论(0)

访谈录2014年

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Almanach de Gotha

animal resting place vegetation