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.