słownik polsko - angielski
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jąkać się podczas mówienia po angielsku:
1. 
stumble over your words
2. 
stutter
stutter - jąkanie się
"C-c-can we g-go now?" she stuttered.
I managed to stutter the reply.
When she began to stutter, her classmates couldn't help laughing.
stutter while speaking