namáhat si zbytečně hlasivky, unavovat se zbytečným mluvením
Honestly, you're wasting your breath - he doesn't want to hear what anyone else has got to say.(CALD)
Don't waste your breath. I've already asked her to help and she said no. (CIDI)
You'd be wasting your breath reporting it to the police - they never look for stolen bikes.(CIDI)
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