Razor Barbed Hlau yog dab tsi?

Razor barbed hlau, raws li lub npe qhia, yog ib tug rub hlua nrog ntse hniav. Nws feem ntau yog siv rau hauv kev ruaj ntseg thiab kev tiv thaiv tub sab siv. Nws ua haujlwm los ntawm kev hlais lossis txiav txoj hlua thaum lub sijhawm rub tawm, tiv thaiv kev nyiag khoom.