frontier造句

the frontier between the land of the Saxons and that of the Danes
撒克逊人土地和古斯堪的纳维亚人土地的边界

There were very few border controls on the southwestern frontier.
西南国界上没几个边境检查站.

The frontier station was starved for food and water.
边防站急需食物和水.

• #frontier