实际上，虽然时间幻觉是大脑自身产生的，但正如《盗梦空间》的情节一样，这种幻觉也是个令科学家感到费解的难题。
In fact, the illusion of time may be created by the brain itself, which is at least as much of a head-scratcher as the plot of Inception.
X射线第一次被观察和记录是在1895年，当时德国科学家威尔姆·康拉德·伦琴在使用真空管做实验时意外发现了X射线。 与光线和无线电波一样，X射线也是一种电磁辐射。
X-rayswere first observed and documented in 1895 by Wilhelm Conrad Roentgen, a Germanscientist who found them quite by accident when experimenting with vacuumtubes.
科学家们说杂交的人类和牛的胚胎能有利于促进寻找方法来预防帕金森式病和老年痴呆症，对于脊髓损伤、糖尿病和关节炎也是一样。
The scientists said the hybrid human-bovine embryos could prove useful in pursuing treatments to prevent Parkinson's disease and Alzheimer's, as well as spinal cord injuries, diabetes and arthritis.
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