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Rainforests exist because it rains a lot and that makes the forests grow, right? Well, not so fast. What if its not the rain that makes the forestswhat if its the forests that actually generate the rain? Thats the contention of a paper in BioScience

发表于:2019-01-02 / 阅读(102) / 评论(0) 分类 60秒科学

Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience

发表于:2019-01-08 / 阅读(63) / 评论(0) 分类 Scientific American(五)月

Fact: liquid water is heavier than air. Fact: clouds, which consist of water droplets and ice crystals, seem to hover in the air. One final fact: the water droplets in a typical cloud together weigh many tons. Which raises a question: how do clouds s

发表于:2019-01-22 / 阅读(119) / 评论(0) 分类 英语时差8,16

今天我们要学的词是spew。 Spew, 意思是喷出,涌出。 As Mexico's Popocatepetl volcano continues to spew ash plumes, water vapor and hot rocks, some of the local schools have canceled classes, 由于墨西哥的波波卡特佩特火山继

发表于:2019-02-08 / 阅读(53) / 评论(0) 分类 英语单词荟萃

Airplane Contrails Have you ever seen a perfectly cloudless sky? Cloudlessthat isexcept for two or three long white lines smeared across the perfect blue sky by airplanes like smudges on a pane of glass. Why do airplanes sometimes leave contrails beh

发表于:2019-03-09 / 阅读(105) / 评论(0) 分类 英语听力文摘 English Digest

Windflowers Seals and Crofts Windflowers, Windflowers, My father told me not to go near them. He said feared them always And he told me that they carried him away. Windflowers, Beautiful windflowers, I couldn't wait to touch them, to smell them I hel

发表于:2019-03-10 / 阅读(85) / 评论(0) 分类 双语有声阅读
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