| 释义 |
frontiers
释义
n. 边疆（frontier 的复数）；尖端科学
六级频率
考频：近五年出现1次
n. 尖端; 新领域
例句
1·By the early eleventh century, however, the empire had regained almost half of its lost possessions, its new frontiers were secure, and its influence extended far beyond its borders.
然而，到11世纪早期，帝国已收复了几乎一半的失地，新的边境得到了保障，其影响力远远超出了国界。
2·Naked aggression and an attempt to change frontiers by force could not go unchallenged.
对公然侵略和企图用武力改变疆域，人们不会坐视不管。
《柯林斯英汉双解大词典》
3·The principal mark of genius is not perfection but originality, the opening of new frontiers .
天才的主要标志不是完美，而是独创性，即开拓新的领域。
短语
1·new frontier
新边疆；新境界
2·frontier trade
边境贸易
3·efficient frontier
有效边界；效率前缘
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