1. Lub rooj sib tham tshwj xeeb ntawm lub rooj sib tham sib tham hauv hluav taws xob dawb yog lub rooj sib tham tswj kev sib tham tsim los ntawm cov neeg thiab cov khoos phis tawj, uas suav nrog cov ntaub ntawv sau, xa tawm, khaws cia, tu thiab siv. Vdink sib tham sib tv touch screen whiteboard electronic whiteboard nqe
2. Thaum teem sijhawm, koj tuaj yeem kaw lub sijhawm sib tham los daws qhov tsis sib haum xeeb ntawm lub sijhawm sib tham. Tsis tas li ntawd, lub rooj sib tham rooj sib tham kuj tseem muab chav sib tham sib tham txog cov ntaub ntawv sib koom ua ke los pab txhawb kev nkag siab ntawm chav sib tham nyob. Vdink sib tham sib tv touch screen whiteboard electronic whiteboard nqe
3. Lub rooj sib tham tswj kev sib tham ntawm lub rooj sib tham hauv hluav taws xob dawb kuj txhawb kev teem caij thiab tshuaj xyuas cov txheej txheem, uas yooj yim rau cov thawj coj los tswj chav sib tham. Vdink sib tham sib tv touch screen whiteboard electronic whiteboard nqe

2022.5.7