最終更新日：2024/08/08
The XB-70 Valkyrie was an experimental bomber developed by the United States Air Force.
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The XB-70 Valkyrie was an experimental bomber developed by the United States Air Force.
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The XB-70 Valkyrie was an experimental bomber developed by the United States Air Force.
The XB-70 Valkyrie was an experimental bomber developed by the United States Air Force.
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