Hotels do border trade frontier.
做边境贸易的边疆宾馆。
There were very few border controls on the southwestern frontier.
西南国界上没几个边境检查站。
The border or boundary of a country or an area of land; a frontier.
这是一本描写美国边疆生活的小说。
The frontier or border of a country.
处在或者组成边界、边缘。
The frontier or border of a country.
处在或者组成边界、边缘。
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