单词：vacuum steam heating
真空式蒸汽供暖
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Spinosaurus, a Swimming Dinosaur Bigger than T-Rex 比霸王龙更大的恐龙 Could a creature that lived 95 million years ago travel from what is now North Africa to Europe and even to North America? Yes, but it probably was not easy. It happened w
发表于:2018-12-16 / 阅读(27) / 评论(0)
2014年VOA慢速英语(九)月
2014年VOA慢速英语(九)月
A National Geographic researcher and his team have uncovered fossilized remains of 5 ancient crocodile species that lived among dinosaurs some 100 million years ago. One of the crocs had an oversized set of canines, and another had a snout like a duc
发表于:2018-12-26 / 阅读(32) / 评论(0)
自然百科2009年
自然百科2009年
Mini T. Rex Recovered In a study in the journal Science, researchers announce the discovery of a dinosaur 125 million years older and one-nintieth the size of T. Rex, but having virtually the same body plan as the giant dino. Cynthia Graber reports.
发表于:2019-01-02 / 阅读(97) / 评论(0)
60秒科学
60秒科学