| Scientists who study Mars have laid down the program that they can follow. To begin with, they will have to find out whether life has ever existed on the planet Mars in the past. Secondly they will have to make a reliable map of its surface. And finally, they will have to make a list of the gases. Above all, they will have to discover how much nitrogen it possesses, since nitrogen is 4/5 of the air we breathe. They are surprisingly optimistic about raising the temperature on Mars and believe it could be done in 200 years. It would take a bit longer, though, to transform the atmosphere so that human beings could live there. Scientists estimate that this will take 100,000 years. | |
| 研究火星的科学家列出了他们能做的项目。首先，他们要看看过去火星上到底有没有生命存在过。然后，他们需要一张可靠的火星表面地图。最后，他们还需要一张气体清单，尤其是需要看看火星上有多少氮气，毕竟氮气占我们吸入气体的五分之四。科学家们对提高火星温度表示非常乐观，认为能在200年之内做到。不过想要把大气层变成人类可以生存的状态还需要更久。科学家估计，这将需要10万年。 |
| Scientists who study Mars have laid down the program that they can follow. To begin with, they will have to find out whether life has ever existed on the planet Mars in the past. Secondly they will have to make a reliable map of its surface. And finally, they will have to make a list of the gases. Above all, they will have to discover how much nitrogen it possesses, since nitrogen is 4 5 of the air we breathe. They are surprisingly optimistic about raising the temperature on Mars and believe it could be done in 200 years. It would take a bit longer, though, to transform the atmosphere so that human beings could live there. Scientists estimate that this will take 100, 000 years. | |
| yan jiu huo xing de ke xue jia lie chu le ta men neng zuo de xiang mu. shou xian, ta men yao kan kan guo qu huo xing shang dao di you mei you sheng ming cun zai guo. ran hou, ta men xu yao yi zhang ke kao de huo xing biao mian di tu. zui hou, ta men hai xu yao yi zhang qi ti qing dan, you qi shi xu yao kan kan huo xing shang you duo shao dan qi, bi jing dan qi zhan wo men xi ru qi ti de wu fen zhi si. ke xue jia men dui ti gao huo xing wen du biao shi fei chang le guan, ren wei neng zai 200 nian zhi nei zuo dao. bu guo xiang yao ba da qi ceng bian cheng ren lei ke yi sheng cun de zhuang tai hai xu yao geng jiu. ke xue jia gu ji, zhe jiang xu yao 10 wan nian. |
| Scientists who study Mars have laid down the program that they can follow. To begin with, they will have to find out whether life has ever existed on the planet Mars in the past. Secondly they will have to make a reliable map of its surface. And finally, they will have to make a list of the gases. Above all, they will have to discover how much nitrogen it possesses, since nitrogen is 4 5 of the air we breathe. They are surprisingly optimistic about raising the temperature on Mars and believe it could be done in 200 years. It would take a bit longer, though, to transform the atmosphere so that human beings could live there. Scientists estimate that this will take 100, 000 years. | |
| yán jiū huǒ xīng de kē xué jiā liè chū le tā men néng zuò de xiàng mù. shǒu xiān, tā men yào kàn kàn guò qù huǒ xīng shàng dào dǐ yǒu méi yǒu shēng mìng cún zài guò. rán hòu, tā men xū yào yī zhāng kě kào de huǒ xīng biǎo miàn dì tú. zuì hòu, tā men hái xū yào yī zhāng qì tǐ qīng dān, yóu qí shì xū yào kàn kàn huǒ xīng shàng yǒu duō shǎo dàn qì, bì jìng dàn qì zhàn wǒ men xī rù qì tǐ de wǔ fēn zhī sì. kē xué jiā men duì tí gāo huǒ xīng wēn dù biǎo shì fēi cháng lè guān, rèn wéi néng zài 200 nián zhī nèi zuò dào. bù guò xiǎng yào bǎ dà qì céng biàn chéng rén lèi kě yǐ shēng cún de zhuàng tài hái xū yào gèng jiǔ. kē xué jiā gū jì, zhè jiāng xū yào 10 wàn nián. |
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