求一篇英文感想
Mission Mars
Getting humans to Mars will need medical research on the international
Space station until at least 2020,said the programme's lead scientist.
That is five years beyond Nasa's current budget.
The space station is a US＄100 billion project involving 16 nations.After more than 10 years,they have nearly finished building it.
A special panel said it would take more time to research the risks of going to Mars.
They need to look into radiation exposure,bone loss and other problems that humans have if they spend a long time in space.
Nasa plans to spend about US＄2.5 billion a year for space station operations until the end of 2015.
But ending it just five years after finishing it would upset Russia,Europe,Japan and Canada.Those countries have spent a lot of money on the stations.They want to get something back.
不要翻譯 要的是感想 剪報來著 100詞左右