This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses wavelengths of blue and our sun's ab

发表于:2018-12-24 / 阅读(36) / 评论(0) 分类 Scientific American(四)月

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(72) / 评论(0) 分类 Scientific American(八)月

The script of this programme 本节目台词 Tubes and buses are the best way to get round London. John: Hi, and welcome to BBC Learning English. I'm John. Oliver: 大家好,我是 Oliver。 John: Today we're going to find out all about public transport in Lo

发表于:2019-01-18 / 阅读(158) / 评论(0) 分类 都市掠影

LONDON, April 14 (Xinhua) -- Londay's local city government said on Thursday that the city's transport infrastructure is still one of the biggest risks to the running of the 2012 Olympic Games. Val Shawcross, chairman of the London Assembly transport

发表于:2019-02-07 / 阅读(55) / 评论(0) 分类 英语新闻

MOSCOW, Jan. 27 (Xinhua) -- Russia should adopt tougher security measures(安全措施) to ensure transport safety, Russian President Dmitry Medvedev said here on Thursday after he came back from the Davos Forum. The president visited Moscow's su

发表于:2019-02-17 / 阅读(86) / 评论(0) 分类 英语新闻

台湾籍旅美老师今天交给我们的句子是: Blood is the tissue that not only carries cells that transport oxygen, for example, the red blood cells, or fights infectious diseases, but it also carries messenger molecules, hormone-like facto

发表于:2019-03-05 / 阅读(83) / 评论(0) 分类 留美老师带你每日说英文