MRO has three cameras on board.

火星勘测轨道飞行器上有三个摄像头。

MRO has made more than 60,000 orbits.

火星勘测轨道飞行器已经绕轨道运行了 6 万多次。

MRO sends back more data than all other Mars missions combined.

火星勘测轨道飞行器发回的数据比所有其他火星任务发回的数据总和还要多。

PASSING MRO, PARABIOLOGIST (through translator): In the past, our family hunted.

助理生物学家Passing Mro：在过去，我们的家庭以狩猎为生。

And it is on the ancient seabed that MRO sees something remarkable.

正是在这片古老的海底，火星勘测轨道飞行器发现了一些不同寻常的东西。

MRO saw a massive 400-meter-thick deposit formed from a mineral that forms in deep-sea hydrothermal environments, such as one that might have undersea vents.

火星勘测轨道飞行器看到了一个 400 米厚的巨大沉积物，由深海热液环境中形成的矿物质形成，比如可能有海底喷口的环境。

Then, in 2017, MRO turns its gaze to one of the Red Planet's oldest features — The Eridania Basin — thought to have been an ancient sea.

然后，在 2017 年，火星勘测轨道飞行器将目光转向这颗红色星球最古老的地貌之一——艾瑞达尼亚盆地——被认为是一片古老的海洋。