China mission to land rover on Mars by 2020

The transcript discusses China's ambitious plan to launch a Mars exploration satellite around 2020, aiming to achieve orbiting, landing, and roving in one mission. This is a significant challenge, as only the USA has successfully landed and roved on Mars, while Russia and the former Soviet Union have only landed. The transcript also touches on the international reactions to China's space endeavors.

实现火星探测和着陆巡视的目标需要哪些关键步骤？

中国的火星探测计划与美国和俄罗斯的成功经验相比，有何不同？