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科学美国人60秒 SSS Hair Cells Could Heal Skin Sans Scars

Long ago, before BandAids, or even medicine of any kind, our ancestors evolved to heal cuts themselves. If you got sliced open, the body blocked it up, to prevent blood loss, water loss, infection. But as we gained that powerwe sacrificed something e

发表于:2018-12-24 / 阅读(144) / 评论(0)

2017年Scientific American(一)月

英语课程计划-World Food Day

October the 16th is World Food Day (WFD). This date is when the Food and Agriculture Organization (FAO) of the United Nations started in 1945. WFD itself didnt start until 1979. It was created by the FAO at the Organization's 20th General Conference.

发表于:2018-12-29 / 阅读(172) / 评论(0)

英语课程学习计划和讲义

2007-09-06, Coral Reef Erotica 神奇的珊瑚礁

You may think you are gazing upon a sleepy coral reef in the Caribbean Sea, and of course you are. But hiding in plain sight, is a riving teeming hotbed of erotica , that makes a Hollywood hot up party seem like a trip to the dentist. This is a coral

发表于:2018-12-30 / 阅读(198) / 评论(0)

国家地理2007年

VOA慢速英语2014 AS IT IS 2014-01-13 Terrorism Threat Remains Strong in Africa

AS IT IS 2014-01-13 Terrorism Threat Remains Strong in Africa Hello, and welcome to As It Is from VOA Learning English. Im Christopher Cruise in Washington. Today we report from Africa on how the continent is dealing with the growing threat of terror

发表于:2019-01-12 / 阅读(120) / 评论(0)

2014年VOA慢速英语(一)月

VOA标准英语2011--Stem Cell Treatment Boosts Heart Function

Stem Cell Treatment Boosts Heart Function A stem cell treatment for patients with heart failure significantly improved their heart function in a small but promising new study. In heart failure, the heart loses its ability to efficiently pump blood. I

发表于:2019-01-13 / 阅读(113) / 评论(0)

VOA标准英语2011年(十一月)

VOA常速英语2016--心力衰竭患者有望逐步医治

心力衰竭患者有望逐步医治 A stem cell treatment for patients experiencing heart failure significantly improved their heart function in a small but promising new study. In heart failure, the heart loses its ability to efficiently pump blood

发表于:2019-01-14 / 阅读(170) / 评论(0)

VOA标准英语2016年(七月)

VOA标准英语2011--Deafness 'Cure' is a Goal for Science

Deafness 'Cure' is a Goal for Science The New York Academy of Medicine recently (October 3) hosted a research summit sponsored by the Hearing Health Foundation to promote a cure for deafness caused by damaged hair cells in the ear. An estimated 37 mi

发表于:2019-02-12 / 阅读(172) / 评论(0)

VOA标准英语2011年(十月)

U.S. researchers discover human lung stem cell

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(213) / 评论(0)

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bidirectional thyristor

buffalo berries