单词：screened gypsum
单词：screened gypsum 相关文章
ANNOUNCER: Welcome to THIS IS AMERICA IN VOA Special English. I'm Faith Lapidus. White Sands National Monument One of the worlds great natural wonders is in the state of New Mexico, in the American Southwest. Nature has created huge moving hills of
VOA慢速英语2007年（四）月
Sunscreened Plants 遮光植物 A NASA researcher is finding that alfalfa plants grow more poorly when exposed to UVB -- ultraviolet B radiation from the sun. Learn more about sunscreened plants -- today on Earth and Sky. JB: This is Earth and Sky. Eart
(科普英语)Earth and Sky
All U.S. Blood Donations Should Be Screened For Zika, FDA Says play pause stop mute unmute max volume 00:0003:33repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash p
2016年NPR美国国家公共电台8月
ANNOUNCER: Welcome to THIS IS AMERICA IN VOA Special English. I'm Faith Lapidus. One of the world's great natural wonders is in the state of New Mexico, in the American Southwest. Nature has created huge moving hills of pure white sand. These sand du
2010年慢速英语(一)月
HELSINKI, July 17 (Xinhua) -- A waste stack near the coast of the Baltic Sea is leaking considerable amount of phosphorous to the sea waters, Finnish environment ministry said on Wednesday. The Finnish Environmental Institute took samples from two ph
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The four miners have been named as Guan Qingji, Hua Mingxi, Li Qiusheng and Zhao Zhicheng. They were brought to the surface one after another through an specially drilled access shaft between 9:20 and 10:50 local time, late on Friday. They are now re
2016CRI中国国际广播电台