Elon Musk: 猎鹰 9 号第一阶段与第二阶段的质量比太高，需要长时间的入口燃烧。这是固定在 Starship 上的。

原推：Stage 1 to stage 2 mass ratio is too high on Falcon 9, necessitating a long entry burn. This is fixed on Starship.
https://twitter.com/elonmusk/status/1631730183698001920