When did the country open its borders?
这个国家是何时开放边界的？
Panic-stricken travellers fled for the borders.
惊慌失措的旅行者们向边界逃跑。
Troops have sealed the borders between the countries.
军队已关闭了两国边界。
Some straddle borders. Some straddle disciplines.
有些是跨国界，有些是跨学科。
Their results offer ammunition for fans of more open borders.
他们的结果为那些主张更多开放边境的人提供了支持。
The ripple effects of these transitions will reach beyond the borders of their nations.
这些转变的连锁反应将会穿越边界，波及这些国家之外的地方。
This is a sign of the continued allure of creating scientific coalitions across borders.
这是一个迹象，表明跨国界建立科学联盟的持续吸引力。
Of the forces shaping higher education, none is more sweeping than the movement across borders.
在塑造高等教育的力量中，最具影响力的莫过于跨越国界的教育。
Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.
相反，针叶树将侵入白杨树林的边界，越来越多地遮挡白杨所需的阳光。
In a region today divided by languages and borders, archaeologists had a duty to inform the general public about their common cultural heritage.
在今天这个被语言和边界分割的地区，考古学家有责任让公众了解他们共同的文化遗产。
By the late fourth millennium B.C., there is already evidence of large culture zones reaching from Eastern Europe to the western borders of Mongolia.
到公元前4000年末已有证据表明，存在着从东欧延伸到蒙古西边境的大文化圈。
As the resources needed to secure Rome's borders increased, serious conflicts developed among Roman leaders over how best to protect Roman territory against invading tribes.
随着确保罗马边境安全所需资源的增加，罗马领导人之间就如何最好地保护罗马领土不受入侵部落的侵扰这一问题产生了严重的冲突。
And with certain other migrating species, the challenge is complicated further—by vastly greater distances traversed, more jurisdictions, more borders, more dangers along the way.
对于某些其他的迁徙物种来说，挑战变得更加复杂——因为跨越的距离更大、管辖范围更广、边界更广、沿途的危险也更多。
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。
The plot often borders on farce.
那种情节常常近乎滑稽。
Troops have been sent to defend the borders.
已派出部队去守卫边疆。
缅甸与印度毗邻。
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