1940年至1959年间，过度捕捞导致鲑鱼数量锐减，以致于1953年阿拉斯加被指定为联邦灾区。
Between 1940 and 1959, overfishing led to crashes in salmon populations so severe that in 1953 Alaska was declared a federal disaster area.
1940年至1959年间，过度捕捞导致鲑鱼数量锐减，以致于1953年阿拉斯加被指定为联邦灾区。
Between 1940 and 1959, overfishing led to crashes in salmon populations so severe that in 1953 Alaska was declared a federal disaster area.
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