The wildebeests follow, in their migration, the pattern of local rainfall.

角马在迁徙时遵循当地降雨的模式。

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Migration could reduce the amount of disease as infected animals are left behind to die, but changes in migration might prevent such natural purging of infections, the review says.

这份综述说，随着被感染的动物掉队死亡，迁徙可能减少疾病数量，但是迁徙的变化可能阻止这种天然的防止感染的措施。

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Table 1. List of features that make a difference in migration.

表1 .在迁移中产生差异的功能清单。

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Another key event in the making of modernism is the great migration of African-Americans from the rural south to the urban north.

现代创作的另一个重要事件,是非裔美籍从南部乡下,往城市化的北部的大移民。

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North Dakota now boasts the highest rate of domestic in-migration in the country.

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Granted, there is social expense, disruption and even danger from unchecked in-migration, especially if it is illegal.

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The entire Texas miracle can be chalked up to immigration and in-migration.

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