Polish American English Dictionary
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efektywny ?:
1. effective
What is the most effective way to kill ants?
American english word "efektywny"(effective) occurs in sets:
angielski w spedycji unit 1 i 2Skills for the 21 century
planet earth
Unit 5 cz. 2
planet earth 2
2. efficient
Filing is an efficient way of organising your work.
