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op en neer angolul

HollandAngol
op en neer bijwoord

to and fro(back and forth)
adverb
[UK: tuː ənd frəʊ] [US: ˈtuː ænd ˈfroʊ]

up and down(upward and downward, alternately)
adverb
[UK: ʌp ənd daʊn] [US: ʌp ænd ˈdaʊn]