More na ndị ọzọ ndị mmadụ na-now n'ọrụ na-adịru nwa oge ọrụ, nke bụ isi a agbazinye n'ụzọ: A n'ji n'aka nwere a multi-afọ ịkwụ ụgwọ oge, nke onye ọrụ na-ejedebeghị na ọnwa iri na abua nwere ike ekwe nkwa.
