To be or sound like a broken record means to say the same thing many times:

For example, I know I sound like a broken record, but I’ll repeat it—this is the best movie I’ve ever watched.

You’re such a broken record. You’ve already told us you got a promotion, and we’re tired of hearing it!

He’d walk around the house repeating his favorite sayings like a broken record.

Tradução: parece um disco quebrado.