Their absence supports the picture of a cold, dry Mars that never experienced the extended mild period required to form lakes and oceans.

它们的缺失使寒冷、干燥的火星经历了从未经历过形成湖泊和海洋所需的延长温和期的景象。

youdao

The idea of looking for transplanted life stemmed from studies of meteorites from Mars that landed on Earth.

寻找被移植的生命体的想法源于对落在地球上的火星陨石的研究。

youdao

The price of bringing something to Mars that could terraform it would cost billions, possibly even trillions.

将火星地球化的材料带到火星就得花费上数十亿，甚至几万亿的钞票了。

youdao

He found notes that described markings on Mars that Mister Schiaparelli called "canali" Mister Lowell came to believe that intelligent life created the markings on Mars.

VOA: special.2010.07.11

And Mars has this sort of human, flabby torso that's not-- it's sympathetic, but it's a different portrayal of war.

马尔斯看起来像一个普通人,略微虚胖,这一点让人同情,但这是对战争的不同描写

耶鲁公开课 - 欧洲文明课程节选

"It has so much capability, so much more capability than any other vehicle, that I think we can start to contemplate missions like a Mars sample return, which requires a tremendous amount of lift capability because you've got to send a lander to Mars that still has enough propellant to return to Earth."

VOA: special.2011.04.11

So there is a tremendous database about Mars that we're still exploring, we're still mining.

NPR: Revisiting the Viking Missions to Mars

Astrobiological researchers have discovered significant regions below the surface of Mars that could be habitable for Earth-based life.

FORBES: Parts Of Mars May Be Habitable For Earth-Based Life

We may discover resources on the moon or Mars that will boggle the imagination, that will test our limits to dream.

CNN: Bush: 'It is time for America to take the next steps' in space