The brightest star in the night sky — called Sirius, the Dog Star — is about 1000 times brighter than the faintest star you can see.

夜空中最亮的星星——天狼星——比你能看到的最暗的星星还要亮1000倍。

The term comes from a celestial dog, not a porch-napping one – Sirius, the Dog Star, the brightest star in the night sky.

这个词来自一只天狗，而不是一只在门廊打盹的狗——天狼星，狗星，夜空中最亮的星星。