Polish English Dictionary
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mieć dodatnie saldo in English:
1. 
in the black
After months of sacrifice, I'm finally in the black again.
This company is in the black.
If your bank account is in the black, it contains some money.
We've been in the black all year.
English word "mieć dodatnie saldo"(in the black) occurs in sets:
angielski zawodowyAngielski zawodowy
to stay in credit 
To be in credit 