So by the time you even hear from the lander that EDL has started EB: We have to build large amounts of autonomy into the spacecraft so that it can land itself safely. BC: EDL is this immense, technically challenging problem.
安全に着陸するために 宇宙船に高度な自律性を 持たせる必要があります 火星軟着陸は技術的に非常に困難です