Cov hnab canvas yog ua los ntawm cov canvas, ruaj khov thiab ruaj khov, thiab yog ib hom tshiab ntawm cov khoom siv ib puag ncig. Lawv muaj ntau yam zoo, tsis yog tus nqi qis xwb tab sis kuj tuaj yeem rov ua dua tshiab. Nws yog qhov tseeb vim tias lawv qhov kev ua tau zoo uas lawv tau nyiam los ntawm txhua tus. Tam sim no, tom qab lub teb chaws txoj kev txwv cov yas yas tau tshaj tawm, ntau yam khoom noj khoom haus zoo ib puag ncig cov khoom lag luam tau txais kev pom zoo ntawm kev ua lag luam, thiab lub hnab me me tau siv zog los ua ib tus neeg nyob ib puag ncig.
Nyem qhov no kom tau txais ib daim ntawv tsocai
