[网络] 氨基甲基转移酶

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)

Scientific American(六)月

SSS 2009-01-23

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(59) / 评论(0)

Scientific American(一)月

365个英语简短小故事- 40. She Loves Her Son

Maria had to buy food for herself and her son. Divorced for ten years, she was used to doing the shopping for her son. He was a junior in high school, which meant that he would be entering college in two years. Then she would be shopping only for her

发表于:2018-12-31 / 阅读(41) / 评论(0)

365个英语简短小故事

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(89) / 评论(0)

农业与发展

2006年VOA标准英语-Bakassi Residents Accept Land Transfer to Camer

By Gilbert da Costa Abuja 23 June 2006 Preparations are under way for transfer of the oil-rich Bakassi Peninsula from Nigeria to Cameroon. Initial outrage over the decision seems to have died down, and residents are agreeing to be resettled in Niger

发表于:2019-01-13 / 阅读(101) / 评论(0)

2006年VOA标准英语（六月）

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)

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acid electric furnace process

alkali-sulfite process

alpinuss

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assumption of orthogonality

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