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我感觉正常语序应该是 Space technology should be added to this list of fields ,which is being used to su-rvey the surface and even he subsurface of the earth from satellites,space shuttl-es,and airplanes.To不是不定式,Space technology 应该是主语,主句应该为 space technology should be added fields .正确与否不敢保证,仅供参考.
1年前
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