... 可靠的信息源 a reliable source of information 宝贵的自然 资源 valuable natural resources 方便快捷 convenient and efficient ...
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美洲原住民明智地保护了这些宝贵的自然生物资源。
Native Americans had taken care of these precious natural resources wisely.
这是保护世界上最宝贵的自然资源的最好方法。
It's the best way to protect our world's most valuable natural resource.
考虑到宝贵的自然的财富的迅速的耗尽，透过连串文化的微繁殖已经假装增加的意义。
Considering the rapid depletion of precious natural wealth, micropropagation through tissue culture has assumed added significance.
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