单词:high-density polyethylene(HDPE)
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Weve heard that a mothers weight during pregnancy can influence the weight of her offspring. Now a study of rats shows that the fat content in a moms d
中文 英文 缩写 * (符) star (symbol) [美国]电气和电子工程师学会 Institute for Electrical and Electronic Engineers IEEE “请发码”信号
The World Health Organization (WHO) is calling for action to fight all forms of malnutrition(营养不良), including under-nutrition and obesity, which affect hundreds of millions of people worldwide. More than 60 world nutrition(营养) experts
Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou
Hi my name is Jason Cornwell . I'm user experience designer at Gmail. We have been hardworked to update Gmail with a new look.I'm excited to share with you some of the biggest improvements. 大家好 我是Gmail的用户体验设计师Jason Carmel。经