Unlike the sun, whose density is such that it supports nuclear fusion that generates bright sunlight, Gliese 581 is a red dwarf, so-called because the star is small and dim.

与太阳不同，太阳密度太高，能够支持生成强烈太阳光的核聚变，而Gliese 581是颗红矮星，之所以这么叫是因为这个恒星又小又暗。

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Rising sun, sunset west down all day, exposure to bright sunlight through the Windows and warm in the room makes it especially bright.

旭日东升，晚霞西落，整天美好阳光透过飘窗照射在室内显得格外温馨明亮。

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Many people find direct sunlight to be too bright for comfort, especially when reading from white paper upon which the sun is directly shining.

许多人发现直射的阳光过于明亮而使人不舒服，特别是在阳光下阅读白色报纸的时候。

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