π·κ±΄μ€ λ Έλμconstruction worker볡μ¬νκΈ°μ΄λͺ¨μ§ μ 보카ν κ³ λ¦¬μ¬λ/μ μ€μ²μ λμ½λU+1F477ν€μλ건μ€, λ Έλμ, 곡μ¬Keywordsconstruction, worker, build