Cov kev xav tau zoo rau cov qauv welded, cov khoom siv welded, thiab cov pob qij txha welded yog ntau yam. Lawv suav nrog cov kev xav tau sab hauv xws li kev sib koom ua haujlwm thiab koom haum. Nyob rau tib lub sijhawm, yuav tsum tsis muaj qhov tsis xws luag hauv qhov tsos, zoo li, qhov tseeb ntawm qhov loj me, vuam seam tsim, nto thiab int ...
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