Congress has given the USGS the responsibility of volcano hazard assessment, and YNP assists the USGS in their volcano monitoring effort.
国会已经给了美国地质勘探局的火山灾害评估的责任，YNP协助火山监测工作的美国地质调查局。
Congress has given the USGS the responsibility of volcano hazard assessment, and YNP assists the USGS in their volcano monitoring effort.
国会已经给了美国地质勘探局的火山灾害评估的责任，YNP协助火山监测工作的美国地质调查局。
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