translation.en: The question as to whether there is life on Mars that is related to life on Earth has now been very muddied, because we now know, from Mars meteorites that have made it to Earth, that there's material that can be exchanged between those two planets.
translation.zh: 火星上的生命 是否与地球上的生命有联系 现在还是很模糊的一个问题 因为现在我们从 到达地球的火星陨石得知 这两个星球上的物质是可以进行交换的