单词：purpura annularis telangiectodes of majocchi
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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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血管性皮肤病 变应性皮肤血管炎 allergic cutaneous vasculitis 荨麻疹性血管炎 urticarial vasculitis 持久性隆起性红斑 erythema elevatum diutinum 结节性多动脉炎 polyarte
医务英语
AS IT IS 2016-05-19 200 Families Feared Buried in Sri Lanka Landslides 斯里兰卡山体滑坡 传200户活埋 More than 200 families are reported missing in central Sri Lanka after landslides. 斯里兰卡中部发生山体滑坡，超200余个家庭
2016年VOA慢速英语(五)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