The faintest star you can see with your unaided eye is about sixth magnitude (from dark skies) whereas the brightest stars are magnitude zero (or even a negative number).

你用肉眼所能看到的最暗的星的亮度值大约是第6级(如果是黑夜的话)，而最亮的星的亮度值是0(更有甚者其亮度值为负)。

youdao

Little elder brother, you smile very agreeable, eyes are like night up, sky's brightest the stars.

小哥哥，你笑起来好好看，眼睛就像夜晚上，天上最亮的那颗星星。

youdao

I want to catch all the stars in the sky tonight just for you, although you are the most beautiful and brightest star I see.

我想为你摘下今夜天空中所有的星星但你是我见到最美丽，最闪耀的星星。

youdao