Chronic obstructive pulmonary disease, or COPD, is a life-threatening condition commonly caused by years of smoking.
VOA: special.2010.06.23
And several years later these two graduate students at Leiden by the name of Goudsmit and Uhlenbeck proposed that the electron in fact spins.
几年之后,两个莱顿的学生,古德米斯特和乌伦贝克,提出电子其实是在自旋的。
Suddenly, we have evidence, thirteen or fourteen hundred years earlier, that people were reading this stuff and, by and large, it's a pretty constant textual tradition.
因为突然间,我们有了证据,证明1200或1400年前就有人,读着这些经文而且总的来说,经文一直延续了其文本传统。
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