天文学家认为宇宙中其他恒星周围可能存在生命。

Astronomers believe there might be life around other ___suns in the universe.

朋友们的鼓励就像生活中的许多小太阳，总是给我温暖。

My friends' encouragement is like many little ___suns in my life, always giving me warmth.