B2的造价是每架24亿美元，而B21按照官方说法只要5.5亿，说明B21要比B2小很多，机内燃油也会少不少

来源: 天青水蓝于 2026-02-18 22:10:58 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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