单词:wheatmeals
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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
赫芬顿邮报:科学家预言,未来不久,人们将能够通过吞药丸来获取知识,一颗药丸下肚,可能就学会了一门外语.有这么简单的方法,那中国的同学们再不用担心英语学习了. 吃药丸学习英语? Huffingt
Vitamin B9 is also known as folic acid or folate. Technically, folate is the term for the vitamin B9 that is found naturally in foods, while folic acid is the name for the synthetic supplement that is added to foods and vitamins. 维生素B9也称为叶
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
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