Polish American English Dictionary
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na wyciągnięcie ręki ?:
1. 
at their fingertips
2. 
at an arm's length
American english word "na wyciągnięcie ręki"(at an arm's length) occurs in sets:
Esther Perel on Desire3. 
at your fingertips
4. 
on my finger tips
5. 
at my fingertips
American english word "na wyciągnięcie ręki"(at my fingertips) occurs in sets:
Lecę, bo chce6. 
at arm's length
7. 
at hand
It's never at hand when I need it.
We want to ensure that help is at hand (= easily available) for all children suffering abuse.
keeping them on hand 