SSS 2008-03-17
时间：2019-01-08 作者：英语课 分类：Scientific American(三)月
This is Scientific American’s 60-Second Science. I’m Steve Mirsky. This will just take a minute.
Computer status report. After its ongoing 1 Mars’ missions, NASA will concentrate less on the red planet, and more on the solar system's other planets and moons, including our own. That’s what NASA administrator 2 Mike Griffin told an audience of researchers last week at the 39th Lunar and Planetary Conference in Texas. The Mars Science Laboratory lands in 2010. Griffin said that NASA is now planning in earnest for an outer planets flagship mission to Europa, Titan or Ganymede. Europa and Ganymede are moons of Jupiter, Titan is the moon of Saturn 3.The reorientation of NASA’s planetary exploration programs is in response to a recent National Research Council report card. The NRC gave NASA an A for its Mars work, but only a C for its overall research and analysis program and a dismal 4 D for outer planets efforts. Griffin also noted 5 that NASA is now planning seven different small-and-medium-class missions to the moon by 2014. And the Messenger spacecraft goes into orbit around Mercury in 2011.
Thanks for the minute for a Scientific American’s 60-Second Science. I’m Steve Mirsky.
- The problem is ongoing.这个问题尚未解决。
- The issues raised in the report relate directly to Age Concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。
- The role of administrator absorbed much of Ben's energy.行政职务耗掉本很多精力。
- He has proved himself capable as administrator.他表现出管理才能。
- Astronomers used to ask why only Saturn has rings.天文学家们过去一直感到奇怪，为什么只有土星有光环。
- These comparisons suggested that Saturn is made of lighter materials.这些比较告诉我们，土星由较轻的物质构成。
- That is a rather dismal melody.那是一支相当忧郁的歌曲。
- My prospects of returning to a suitable job are dismal.我重新找到一个合适的工作岗位的希望很渺茫。