单词：biochemical activity
单词：biochemical activity 相关文章
THE MAKING OF A NATION - American History: Life in the 1970s and '80s STEVE EMBER: Welcome to THE MAKING OF A NATION -- American history in VOA Special English. I'm Steve Ember. This week in our series, we look back at some of the social issues and c
2012年VOA慢速英语(一)月
This is Scientific America's Sixty-Second-Science. I am Steve Mirsky. Got a minute? Some interesting electrical activity in the clouds of ash drifting around Europe as a result of that Icelandic volcano. Models predicted that electrical charge should
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This is the VOA Special English Health Report. How active you are early in life may affect how able-minded you are late in life. That was the finding of a new study of cognitive impairment, or a loss in mental abilities. The study involved more than
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BEIJING, March 29 (Xinhua) -- Chinese President Xi Jinping on Wednesday stressed the importance of afforestation and urged people, especially the young, to understand and protect nature via tree planting activities. Chinese PresidentXi Jinpingtalks w
cctv9英语新闻2017年
A new study finds regular physical activity as a teenager may prevent cognitive impairment - a decline in mental abilities - decades later. Previous studies found that people who were physically active in later life were more likely to avoid mental d
VOA标准英语2010年(七)月