单词：annular sprayhead
单词：annular sprayhead 相关文章
On December 25, 2000, many people across North America received a rare Christmas treat when the moon passed in front of the sun resulting in a partial solar eclipse. Solar eclipses occur when the moon passes between the Earth and the sun, and the moo
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New Vaccine Shrinks Head and Neck Cancers From VOA Learning English, this is SCIENCE IN THE NEWS, in Special English. Im Bob Doughty. And Im June Simms. Today, we tell about a new vaccine for fighting cancers in the head and neck. We tell about progr
2013年VOA慢速英语(五)月
SCIENCE IN THE NEWS - New Vaccine Shrinks Head and Neck Cancers From VOA Learning English, this is SCIENCE IN THE NEWS, in Special English. Im Bob Doughty. And Im June Simms. Today, we tell about a new vaccine for fighting cancers in the head and nec
2013年VOA慢速英语(三)月
AS IT IS 2016-09-02 Ring of Fire Eclipse Passes Over Africa People in parts of Africa witnessed a ring of fire in the sky Thursday, created by the moon passing between the Earth and the sun. The solar event is called an annular eclipse. A total solar
2016年VOA慢速英语(九)月
An annular solar eclipse is seen formed over the sky of Burma's ancient historic city of Bagan, 15 Jan 2010 Holly Gilbert, an astrophysicist at NASA, explains the science behind the spectacle of the sun's disappearance. So during a total solar eclips
VOA标准英语2010年(七)月