降落途中解体了不清楚是不是因为什么故障触发了终止程序…Looks like engine 2 had issues on ascent & didn’t reach operating chamber pressure during landing burn,but, in theory, it wasn’t needed.Something significant happened shortly after landingburn start. Should know what it was once we can examine the bits later today.大概是要回收残骸才知道怎么了吧