Can you tell me temporary ways to hide the two dark fluorosis stains on my front teeth?

Fluorosis stains: Have your dentist take a look at it. Consider a permanent rather than a temporary fix. You will be happier in the long run. It probably isn't as complicated or expensive to fix as you think. Tooth colored composite bonding might just do the trick. Veneers would be a more permanent and probably better looking treatment option if the stains are very deep or extensive.