Its population was decimated in the past century by commercialfishing and dams that sealed off its migratory spawning routes.
在上个世纪，由于商业捕鱼的原因，再加上人类密封水坝堵住了鲟鱼的迁移产卵路线。
On the basis of Chinese practice, the article discusses the social drive force of floating population migration from the factor of immigratory place, migratory place, region, medium and individual.
作者结合中国的实际情况，从流出地、流入地、区域综合、介质、个体等因素角度，探讨了流动人口产生的社会驱动力；
Its population was decimated in the past century by commercial fishing and DAMS that sealed off its migratory spawning routes.
上世纪，商业性捕鱼和阻挡洄游产卵路线的水坝建设导致其数量骤减。
Its population was decimated in the past century by commercial fishing and DAMS that sealed off its migratory spawning routes.
上世纪，商业性捕鱼和阻挡洄游产卵路线的水坝建设导致其数量骤减。
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