https://blog.wongcw.com/2023/05/17/spacex%e7%9a%84%e7%9b%ae%e6%a8%99%e6%98%af%e6%8e%a8%e5%8b%95%e7%8d%b5%e9%b7%b99%e8%99%9f%e7%81%ab%e7%ae%ad%e7%99%bc%e5%8b%95%e6%a9%9f%e8%91%97%e9%99%b8%e5%9b%9e%e6%94%b620%e6%ac%a1/
SpaceX的目標是推動獵鷹9號火箭發動機著陸回收20次