efinition ntawm koob tshuaj sib npaug
Cov koob tshuaj sib npaug yog hais txog cov khoom lag luam ntawm cov koob tshuaj nqus tshuaj, qhov zoo tshaj plaws thiab txhua lwm yam kev kho ntawm qee yam taw tes hauv cov ntaub so ntswg uas yuav tau kawm. Koob tshuaj sib npaug, chav tsev yog Greek (Sv).