自然资源资料：包括能源、环境、水系、植被等。
Natural Resources Information: including energy, environment, water, vegetation and so on.
援引加利福尼亚自然资源局的资料，美国史上开采的最大的金块，是1854年发现的，重达195磅。
The California Natural Resources Agency says the largest nugget ever mined in the state was found in 1854 and weighed 195 pounds.
根据国际自然和自然资源保护联盟的资料显示，对这个物种最大的威胁包括水污染，大坝建设和湿地面积缩小。
Major threats to the species' survival include water pollution, dam construction, and wetlands loss, according to the International Union for Conservation of Nature.
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