- 国境画定条約{こっきょう かくてい じょうやく}
- at the border: 国境{こっきょう}で
- border: 1border n. 境界(線), 国境; 縁(ふち), へり.【動詞+】We need to break down the borders between (different) academic disciplines.(異なる)学問分野の境界を打破する必要があるThey have closed the borders to visitors from Western nations.西側