Jurvetson tells a story about the time he and his son pushed a rocket to Mach 2.5 — approximately 1,900 miles per hour — before a fin separated and caused a critical failure.
尤尔韦特松讲了一个故事：他和儿子曾经把一支火箭的速度提升至2.5马赫(即时速约1,900英里)，但尾翼随后脱离，造成了严重故障。
Jurvetson tells a story about the time he and his son pushed a rocket to Mach 2.5 — approximately 1,900 miles per hour — before a fin separated and caused a critical failure.
尤尔韦特松讲了一个故事：他和儿子曾经把一支火箭的速度提升至2.5马赫(即时速约1,900英里)，但尾翼随后脱离，造成了严重故障。
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