The expression " to serve someone right" means that someone deserves something, usually deserves something bad.

“to serve someone right” 这个表达是指某人应得的东西， 通常是应得的坏东西。

The expression " to serve (someone) right" means to get what you deserve, because of your own actions you should have expected something bad to happen.

“to serve (someone) right” 的意思是得到你应得的，因为你自己的行为你应该预料到会发生不好的事情。