boundary=somethingの英語

a boundary post

to demarcate the boundary

to delineate a boundary

draw a boundary

to make a boundary （between two estates）

to cross over a border

mark off a boundary

form the boundary of

stake off boundary

a narrow boundary

an indefinable boundary

to be outside the border of something

boundary between objects (boundary line)

a boundary line

a boundary between two things

confine in a cage

to mark the boundaries

a boundary which must not be passed

within the limits―within the boundary

a line that indicates a boundary

a frontier

stake off [out] the boundary

an archaic term for a boundary

a conflict about a border

a line of demarcation

Stretch the limits

the boundary of a specific area

a region marking a boundary

a conflict about the boundaries of an area

shade within clear boundaries