这些现代欧亚混血儿的早期祖先分散到世界各地，那里有更多的季节性日照和更低水平的太阳辐射。
These early ancestors of modern Eurasians disperse into parts of the world that had more seasonal sunshine and much lower levels of sun radiation.
此外，西南科罗拉多的沙漠高原是全国日照最丰富的区域，充足的太阳辐射可加速藻类的生长。
In addition, the high desert plateau of southwest Colorado is one of the sunniest spots in the nation, providing solar radiation that accelerates algae growth.
在夏至这一天，北半球的人们获得的太阳辐射量和日照时间都最多。
People in the northern hemisphere receive the most sunshine and daylight hours on the day of the summer solstice.
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