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Peb lub teb chaws yeej ib txwm muaj qee qhov kev vam meej hauv ntau yam. Kev lag luam txuj ci yog qhov chaw uas peb saib taus heev, thiab peb kuj tab tom txhim kho hauv thaj chaw no. Tom qab tag nrho, qhov no yuav muaj ntau txoj hauv kev. Peb tau lees paub tias yog lub teb chaws loj heev txog tam sim no, thiab raws li cov ntaub ntawv hauv ...Nyeem ntxiv»
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Cov kabmob yog cov khoom uas yuav tsum tau siv rau hauv feem ntau cov khoom siv tig. Kev puas tsuaj ntawm cov kabmob kuj yog qhov tshwm sim ntau. Tom qab ntawd, yuav ua li cas daws cov teeb meem xws li tev tawm thiab kub hnyiab? Qhov tshwm sim tev tawm: Qhov chaw khiav tawm yog tev tawm, qhia pom tseeb convex thiab concave duab tom qab tev tawm qhov laj thawj: 1) Tsis raug peb...Nyeem ntxiv»
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