甲基硅酮

SSS 2011-06-22

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a

发表于:2018-12-24 / 阅读(64) / 评论(0)

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越狱第一季:第四十三期

[00:42.27]T-Bag [00:48.16]D.B.Cooper [00:50.36]D.B. [01:06.58]T-Bag [01:12.17]Oh, is that who you is now? [01:13.37]I thought you was just a cowboy. [01:16.37]Take a couple of steps back, boy. [01:18.05]You know, what I can't understand [01:19.15]is

发表于:2019-01-01 / 阅读(58) / 评论(0)

越狱第一季

AGRICULTURE REPORT - Restrictions on Methyl Bromide

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(90) / 评论(0)

农业与发展

2006年VOA标准英语-US Government Approves Use of Silicone Breast I

By Carol Pearson Washington, DC 21 November 2006 watch Breast Implants report The U.S. Food and Drug Administration (FDA) has lifted its 11-year ban on silicone implants. But the decision is not without controversy. Silicone and saline implants The

发表于:2019-01-12 / 阅读(89) / 评论(0)

2006年VOA标准英语（十一月)

经济学人69:外因遗传与压力新生儿蓝调曲

Science and Technology Epigenetics and stress Baby blues 科技外因遗传与压力新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长

发表于:2019-01-26 / 阅读(58) / 评论(0)

经济学人科技系列

影视歌曲：Meghan Trainor-All About That Bass

Because you know 因为你懂的 I'm all about that bass, 我犹如那重低音贝司 'Bout that bass 超重低音 no treble 不失真 I'm all 'bout that bass, 我犹如那重低音贝司 'bout that bass, no treble 超重低音不失真 I'm all 'bou

发表于:2019-02-11 / 阅读(57) / 评论(0)

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