chegarani kesib oʻtmoq (chegaradan oʻtmoq)

cross the frontier (pass through the border

chegarani tan olmoq recognise the frontiers

chegarani oʻzgartirmoq redraw (recarve, alter) the frontiers

chegarani oʻrnatmoq establish the border (define the boundary)

chegarani qoʻriqlamoq cover (safeguard) the border

shahar chegarasida within the city limits

havo chegarasi air frontier (boundary)

quriqlikdagi chegara land borders

hududiy suv chegaralari boundaries (limits) of the territorial waters.