Why did the near extinction and migrations of wild animals occur?
为什么会发生野生动物濒临灭绝和迁徙的现象？
They subsisted offspring migrations of Persian gazelles from the south.
他们使从南方迁徙过来的波斯瞪羚的后代可以生存下去。
One opinion is that the paintings were a record of seasonal migrations made by herds.
一种观点认为，这些画是兽群季节性迁徙的记录。
They prevent fish migrations and change aquatic habitats essential for native species.
它们阻止了鱼类迁徙，并改变了对本地物种至关重要的水生栖息地。
Tooth analyses also suggest that there were two later migrations of Na-Denes and Eskimo-Aleut.
对牙齿的分析还表明，纳-德内人和爱斯基摩-阿留申人后来还有过两次迁徙。
We mustn't forget the plants, without whose prior invasion of the land none of the other migrations could have happened.
我们不能把植物给忘了，没有它们事先入侵陆地，就不会有其他的迁徙发生。
Sami herders follow the migrations of the reindeer as they move across northern Russia to cooler areas during the summer months.
夏季期间，萨米族牧人跟随着驯鹿迁徙的路线穿越斯堪的俄罗斯北部，到达更凉快的地区。
The biologist Hugh Dingle has identified five characteristics that apply, in varying degrees and combinations, to all migrations.
生物学家休·丁格尔已经识别出五个特征，这些特征在不同程度和组合上适用于所有的迁徙。
Dates given for the migrations should nevertheless be treated with caution, except where supported by hard archaeological evidence.
除非有确凿的考古证据支持，否则我们应谨慎对待给出的迁徙日期。
Unfortunately, this explanation fails to explain the hidden locations, unless the migrations were celebrated with secret ceremonies.
遗憾的是，这种解释未能说明这些位置为何如此隐蔽，除非迁徙是通过某些秘密的仪式来庆祝的。
Instead of following the cattle on their annual migrations, the hunters began to prevent the herd from moving from one spot to another.
猎人们不再跟随牛群进行一年一度的迁徙，而是开始阻止牛群从一个地方迁移到另一个地方。
A likely explanation for this involves the fact that intercontinental migrations require both a land bridge connecting the two continents and the suitable habitat both on and across that land bridge.
对此，有一种可能的解释是，洲际迁移既需要连接两个大陆的大陆桥，也需要大陆桥上和桥对面存在合适的栖息地。
Runs all applicable migrations.
运行所有可应用的迁移。
But migrations have limitations too.
但是迁移也有一些限制。
From there, two successive migrations headed east.
之后，这一种族的两支后裔又开始从中东出发并向东进发。
Two more common problems also relate to migrations.
另外两个常见问题也与迁移有关。
Financing and technical help for Oracle migrations.
针对Oracle迁移的资金和技术方面的帮助。
Migrations have meaningful names and version Numbers.
迁移具备有意义的名称和版本编号。
I've shown you most of what's available in migrations.
我已经演示了迁移中能做的大部分工作。
AIX storage migrations can be time consuming and tricky.
AIX存储迁移既耗时又需要技巧。
The migrations generator is managing the numbers for you.
迁移生成器负责管理编号。
Are any migrations required before you can use the system?
在使用系统之前，需要进行任何迁移吗？
Migrations can handle many different kinds of schema changes.
迁移可以处理许多不同类型的模式变化。
In Rails applications, schema changes occur through migrations.
在Rails应用程序中，模式的更改是通过迁移发生的。
I still had to specify all my validations and initial migrations.
我仍然需要写明所有的验证器和初始迁移。
The other category is referred to as customer migrations situations.
另一类是客户迁移情况。
Next to the scaling, migrations are considered part of the overall scenario.
除了扩充，我们认为这个情景中也必须要考虑移植的情况。
Female leatherbacks begin their first migrations as newly hatched youngsters.
雌菱皮龟在他们被孵化出来之后就开始了它们的第一次迁移。
rake runs up migrations from least to greatest, and down migrations in reverse.
rake按照编号从小到大运行up迁移，从大到小运行down 迁移。
rake runs up migrations from least to greatest, and down migrations in reverse.
rake按照编号从小到大运行up迁移，从大到小运行down 迁移。
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