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A lot of people have had impacted third molars. Third molars produce a lot of chronic pain. Alan Mann, a Prinston University physical anthropologist at the annual meeting of the American Association for the Advancement of Science in Boston on Februar
Scientific American(二)月
Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗？ If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的，我想蛀了也没有关
口腔临床英语对话
Fog Found on Saturn's Moon Titan A study in Astrophysical Journal Letters reveals that Titan may be home to the familiar atmospheric condition known as fog--but made out of methane. Karen Hopkin reports The northeast just had its first big snow of th
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吉他手Ritchie Blackmore和他的妻子Candice Night 组成的夫妻乐队 Blackmores Night 已经是New Age音乐领域中颇负盛名的乐队，每次听他们的歌都觉得自己的想象世界被音乐涂上了一层瑰丽的色彩，Shadow O
天籁音乐
NASA's GRAIL to Map the Moon The U.S. space agency NASA is preparing to launch a new, nearly half-billion dollar lunar mission that will enable scientists to better understand the moon's gravitational field and the lunar interior, from crust to core.
VOA标准英语2011年(九月)
RACHEL MARTIN, HOST: There's a new probe in orbit around the moon. And sometime earlier in this new year, it's expected to land on the Moon's far side, the side we never see from Earth. It is a Chinese probe. And as NPR's Joe Palca explains, although
2018年NPR美国国家公共电台12月