1. Nws muaj peev xwm hais tias cov saw hlau sib txuas ntawm cov saw yog nruj, thiab txoj kev sib hloov tsis yog yooj yim, uas ua rau squeaking.
2, lub log sab tom qab ntawm cov lus qhia muaj qhov teeb meem, ua rau muaj kev sib hloov tsis zoo, lub xov tooj tom qab no tau txais los ntawm tus thib ob, lub sijhawm ntawd thaum muaj xuab zeb sab hauv phau ntawv qhia, nws raug tshem tawm thiab wiped, tsis muaj cov kabmob sab hauv Cov. So tawm me ntsis ntawm cov roj saw.
Tom qab siv lub tsheb kauj vab saum roob nyob rau lub sijhawm, qee qhov ntawm "lub cev" yuav ua rau lub suab tsis meej yog tias tsis muaj kev saib xyuas.
