过去的30年里，数亿中国农民从农村迁入城市，完成了历史上规模最大，速度最快的人口大迁徙。
Several hundred million Chinese peasants have moved from the countryside to the cities over the last 30 years, in one of the largest, most rapid migrations in history.
每年夏天，上百万只角马从干旱的塞伦盖蒂北上迁徙到马赛马拉的湿地，这群角马正是大迁徙的一部分成员。
Every year millions of wildebeests migrants west from the draught Serengeti Plain to wetland in the Mara and these wildebeests were just part of the marching team.
角马跨越肯尼亚马拉河进行大迁徙时，河中会有许多鳄鱼出没，伺机而动。图中，一只鳄鱼吃掉了队伍中一只受伤的年幼角马。
A crocodile eats a young injured wildebeest during the great migration in the Mara River in Kenya which is infested with crocodiles lying in wait to kill.
十年一次的下次人口普查将在2020年进行。届时的普查结果将告诉我们迁移到南方的非裔美国人是否足够构成第三次大迁徙。
The next decennial census in 2020 should tell us whether the influx of African-Americans into the South will be large enough to be considered a third Great Migration.
尽管玻利维亚的时局不稳给智利带来的忧虑，但那个方向给智利带来的主要危险根本谈不上是军事问题——仅仅是玻利维亚的难民大迁徙。
Although political instability in Bolivia is a worry, the main risk to Chile from that direction-an exodus of Bolivian refugees-is hardly a military problem.
我们现代人不愿承认过去的历史是一种变迁的记录，无论是气候、大迁徙、还是民族的兴衰，然而，我们的所作所为却好像现在是最后的篇章一样。
We moderns have grudgingly accepted that the past is a record of shifts in climate, great migrations, the rise and fall of nations, yet we act as if our present is the final chapter.
就Grand derangement(大迁徙乐队)而言，他们通过演唱迈克尔·蒂博创作的歌曲而获得了国际声誉，其中许多为了解现实的阿卡迪亚提供了确凿的依据。
For its part, Grand derangement is gaining an international reputation by performing songs written by Michael Thibault, many of which offer eloquent insight into Acadian reality.
随着越来越多的人登录游戏并花时间在一个人造经济体中寻找乐趣，这是否真的会像卡斯特罗诺瓦在新书《向虚拟世界的大迁徙》（Exodus tothe Virtual World）中认为的那样，改变这个世俗世界？
As many more people log on and spend time having fun in a synthetic economy, will that really change the mundane world, as Castronova argues in a new book, Exodus to the Virtual World?
几百万年前，猛犸象从非洲大陆向北迁徙到欧亚大陆上，第四纪冰川期突然袭来，它们除非保持体温，否则只有死路一条，为此他们退化了尾巴和用来散热的大耳朵，而且进化出厚厚的皮毛。
A couple million years ago, mammoths migrated north from Africa to colonize Eurasia. Sometime around then a massive ice age kicked in—and it was stay warm or die.
汕头市海岸湿地自然保护区是我国三大候鸟迁徙路线涉及区之一；分布64种水鸟，约占汕头鸟类总种数的51.2%。
Shantou Coastal Wetland Natural Reserve was one of three important zones for migratory birds, where distributing 64 species of waterfowls, equal to (51.2%) of the whole birds species in Shantou City.
汕头市海岸湿地自然保护区是我国三大候鸟迁徙路线涉及区之一；分布64种水鸟，约占汕头鸟类总种数的51.2%。
Shantou Coastal Wetland Natural Reserve was one of three important zones for migratory birds, where distributing 64 species of waterfowls, equal to (51.2%) of the whole birds species in Shantou City.
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