frontier (noun)
A frontier is a border between two countries. It is also the edge of a land where people have just started to live and build.
"This is an example with frontier."
FRONTier: The FRONT line of a counTRY.
Using 'frontier' for small, personal boundaries.
Saying 'the frontier of the room' instead of 'the threshold.'
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بدء التعلم مجاناًيمكنك الإلغاء في أي وقت خلال الفترة التجريبية.
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