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Tshuab Vuam Khoom Siv Tsis Siv Neeg Hloov Kho Kev Lag Luam Tsim Khoom
Ua ib qho kev tshawb pom loj heev rau kev lag luam tsim khoom, lub tshuab vuam khoom siv tsis siv neeg tau tsim kho, teeb tsa cov qauv tshiab rau kev ua haujlwm zoo thiab kev tsim khoom. Tsim los ntawm lub tuam txhab ua haujlwm engineering ua ntej, lub tshuab niaj hnub no ua ke cov thev naus laus zis tshiab thiab ...Nyeem ntxiv