Qhov teeb meem: tsis muaj tseeb stepping (ua rau ntug warping)
Yog vim li cas: 1. Hloov cov ntawv yob thiab kho qhov siab.
2. Hloov ob sab matte zaj duab xis thiab xyuas kom meej cov ntawv pub mis.
3. Kev saib xyuas tsis tu ncua thiab hloov cov hniav txiav
Cowint yog lub Hoobkas DTF loj tshaj plaws hauv Suav teb
