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来源:雅诚德英语网
This, together with a decline in sighting activity, led to the dismantling of Project Blue Book in 1969.
这份报告随着目击事件的减少,导致了 1969 年BlueBook计划的解散。
This, together with a decline in sighting activity, led to the dismantling of Project Blue Book in 1969.
这份报告随着目击事件的减少,导致了 1969 年BlueBook计划的解散。