hard border
noun [ C ] uk/?hɑ?d ?b??.d?r/ us/?hɑ?rd ?b??r.d?/
（国家之间）设有边防的边界，硬边界
a border between countries that is strongly controlled and protected by officials, police, or soldiers, rather than one where people are allowed to pass through easily with few controls
Introducing a hard border between the two countries could affect tourism. 在两国之间引入设防边界可能会影响旅游业。
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