长期以来，美国一直努力实施全球资源战略，鼓励本国公司到海外勘探开发矿产资源，以获取廉价、优质的矿产资源，保证本国资源需求。
All along America always implements global resource strategy and encourages domestic companies accessing to overseas resource exploration and obtaining cheap resource to guarantee domestic demand.
长期以来，美国一直努力实施全球资源战略，鼓励本国公司到海外勘探开发矿产资源，以获取廉价、优质的矿产资源，保证本国资源需求。
All along America always implements global resource strategy and encourages domestic companies accessing to overseas resource exploration and obtaining cheap resource to guarantee domestic demand.
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