Feem ntau, ib rab phom ntev-plhaw txuas nrog nkaus xwb rau lub pluaj ntiv nplhaib ntawm qhov taub qab. Tib rab phom muaj rab peev xwm nqa tau ob qho tib si thiab nqa ntawm sab xub pwg sab laug, tab sis yog tias rab yaj phom raug dai ntawm sab xis, nqa nws sab xub pwg sab xis kom tiv thaiv kev cuam tshuam. Tib rab phom roj hmab siv tau ntau yam sib xyaw ua ke nrog ntau lub hnab, xws li hnab ceg, hnab me, dej ntim dej lossis SLR koob yees duab. Nws yog qhov yooj yim heev thiab siv dav hauv lub neej txhua hnub.
Qhov loj tshaj qhov zoo tshaj plaws ntawm cov phom taw tes tsuas yog tias koj tuaj yeem tso lub phom rau ntawm sab laug thiab sab xub pwg tsis tas kho txoj hlua phom. Qhov kev tsim qauv no, uas tau nrov heev ntau xyoo dhau los, suav txog qhov kev xav tau ntawm kev tua hluav taws hauv cov trenches yam tsis muaj kev nthuav dav ntawm caj npab thiab lwm qhov vim tias kev tshem phom. Tsis tas li ntawd, nws tuaj yeem yooj yim cuam tshuam rau qhov hluav taws kub, thiab tib rab phom siv phom yuav tsis txwv ntau yam kev sib raug zoo.
Tab sis lub ntsej muag phom ib leeg yog nyob ntawm qhov tsis zoo ntawm kev tswj kom ruaj khov phom phom. Thaum lub hauv caug nyob hauv av, lub caj pas yuav kov hauv av. Tsis tas li ntawd, vim tias muaj kev txhawb nqa me me nyob rau hauv pem hauv ntej lub cev xwb, feem ntau nws yuav tsum siv ob txhais tes txhawm rau txhawm rau tswj kev ruaj ntseg ntawm rab phom lub cev. Txwv tsis pub, thaum taug kev nce thiab nqis ntaiv lossis ntaiv, rab phom yuav chwv lub cev, uas ua rau nws nyuaj txav. Qhov no yog txoj siv zoo rau kev sib ntaus sib tua thiab kev tua phom ntau ntau, tab sis nws tsis tsim nyog rau kev txav mus ntev thiab nqa lub sijhawm ntev.