Siv hluav taws xob rau cov xov tooj ntawm tes, cov khoos phis tawj, cov teeb rooj, cov pawg them hluav taws xob thiab lwm yam khoom siv hluav taws xob thaum lub sijhawm noj mov sab nraum zoov, mus pw hav zoov thiab lwm yam dej num sab nraum zoov.