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A spacecraft was launched on a mission to soft-land on Mars and photograph its surface.
一艘太空般发射了,其使命是软着陆于火之上并拍摄它的表面情况.
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An investigation into the specific strain of the disease has been launched to determine its origin.
已经组织了专门研究抑制此疾病的调查组来寻找根源.
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