单词：Becquerel rays
单词：Becquerel rays 相关文章
[00:04.05]第三部分 车祸伤员 [00:08.10]1.Tell me what your problem is. [00:21.12]告诉我你怎么不舒服? [00:34.14]2.Does it hurt when I press here? [00:45.73]我按这儿疼吗? [00:57.31]3.Though it's not very serious,you should rest in bed as much as possibl
医疗服务英语
Health Report - Mouth X-Rays and the Brain; Infected Gums Do Not Cause Heart Attacks This is the VOA Special English Health Report. A new study suggests that dental X-rays may increase the risk of the most common kind of brain tumor. However, experts
2012年VOA慢速英语(四)月
The nineteenth century held one last great surprise for chemists. It began in 1896 when Henri Becquerel in Paris carelessly left a packet of uranium salts on a wrapped photographic plate in a drawer. When he took theplate out some time later, he was
万物简史
As summer approaches we all enjoy outdoor activities. But with sunlight becoming more intense we should protect our skin from harmful direct exposure to the sun. 随着夏日的到来，我们都喜欢进行一些户外运动。但因为日照愈加强
中英双语新闻