A circular green and black background with a white circle in the center
Schlüsselwörter
radar,
circle,
colours,
technology,
wheel,
screen,
vector,
illustration,
design,
military,
green,
sonar,
light,
war,
rainbow,
art,
pattern,
spectrum,
shape,
diagram,
guide,
colourful,
target,
aeroplane,
submarine
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