The migrations of birds are fascinating to observe.

观察鸟类的迁移非常有趣。

Climate change can affect the migrations of various species.

气候变化会影响各种物种的迁移。

Human migrations have shaped the history of many countries.

人类的迁移塑造了许多国家的历史。

The migrations of whales are tracked using satellite technology.

使用卫星技术追踪鲸鱼的迁移。

Many people study the migrations of animals to understand their behavior.

许多人研究动物的迁移以了解它们的行为。

The other category is referred to as customer migrations situations.

另一类是客户迁移情况。

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。

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。

To see how the migrations work in the database, delete all of the migrations in the db/migrations directory.

要查看迁移在数据库中的工作方式，请删除 db/migrations 目录中的全部迁移。

And their fall migration is one of the largest unseen migrations on the planet.

它们的秋季迁移是地球上前所未见的大迁移之一。