Soon after, the reindeer, too, start their winter migration.
不久，驯鹿也开始了他们的冬季迁移。
Some ranchers plan to raise the lowest fence strands so pronghorn, like these near Medicine Hat, Alberta, can more easily slip under during their winter migration.
一些牧场主计划提高最低栅栏索，以便在冬季迁徙期间，如亚伯达梅蒂逊哈市附近的这些叉角羚能更容易从下面溜过去。
By the time next year's winter migration begins several summer generations will have lived and died and it will be last year's migrators' great grandchildren that make the trip.
从第二年的冬天繁殖期到来，许多夏天的一代将要出生和死去，并且这也会每年持续产生许多旅行的子孙。
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