bijeonmunjeok
unprofessional
non professionnel ; non-expert
그의 비전문적 태도는 팀에 나쁜 영향을 미쳤다.
geuuibijeonmunjeok taedo-neun time nappeun yeonghyang-eul michyeotda.
His unprofessional attitude had a negative impact on the team.
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