gyeonghanggonggi jojongbeop
aeronautical navigation
navigation aéronautique
경항공기 조종법을 배우는 것은 매우 흥미롭습니다.
gyeonghanggonggi jojongbeobeul baeuneun geos-eun maeu heungmiropseubnida.
Learning aeronautical navigation is very interesting.
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