Siv ib qho kev sib tw los teeb lub tswm ciab, ua tib zoo saib koj yuav pom tias cov tswm ciab tau yaj mus rau hauv "cov roj ciab", thiab tom qab ntawd cov nplaim taws tshwm sim, cov nplaim taws pib me me, thiab tom qab ntawd maj mam loj dua, cov nplaim taws tau muab faib ua peb txheej: nplaim taws sab nraud hu ua nplaim taws, nruab nrab pa...
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