CNN News: “好奇号”火星拍摄全景图

NASA has several active missions there. This panorama was captured by a rover named Curiosity. It's the key part of a $2.5 billion project to investigate the planets environment. What looks like one picture according to NASA is actually made up of 1,200 individual images that were taken over several days. Scientists can zoom in to see distant details. For instance, the rim of the crater that Curiosity is in, pan left and you can see another crater estimated to be three miles wide. An area that's rich in clay, unique features of the land, a cliff, it's all visible here and from the details we can see of the Curiosity rover itself a sundial is there to indicate what time of the sol it is.

美国宇航局在火星有几个活跃的任务。这幅全景图是由名为“好奇号”的漫游者拍摄的。这是一项价值25亿美元的行星环境调查项目的关键部分。根据美国国家航空航天局的说法，这看起来像一张图片，实际上是由1200张独立图片组成的，这些图片是在几天内拍摄的。科学家可以放大看到远处的细节。例如，在好奇号所在的陨石坑的边缘，你可以看到另一个估计有三英里宽的陨石坑。这片土地上有丰富的粘土，独特的地貌，悬崖，这些都可以在从照片上看到，从细节我们可以看到好奇号探测车本身有一个日晷来指示太阳的时间。

Scientists call days on Mars sols. Each ones about 39 and a half minutes longer than each Earth day. You can also see the tracks the rover made through the martian dirt as it ambled across the planet's surface. The photos were taken around the time of last Thanksgiving. While NASA's employees were off enjoying turkey, the organization made Curiosity work, that is to say it gave the rover the command to take lots of pictures that could be stitched together to complete the panorama.

科学家称火星上的日子为“火星日”。大约比每个地球日长39分半钟。你还可以看到火星车在火星表面漫步时在火星泥土上留下的痕迹。这些照片是去年感恩节前后拍的。当NASA的工作人员在享受火鸡大餐的时候，他们让“好奇号”开始工作了，也就是说，它给了“好奇号”拍摄大量照片的命令，这些照片可以被拼接在一起来完成整个全景。

Back on Earth another campaign has been suspended among the Democrats seeking their party's nomination for president. Yesterday U.S. Senator Elizabeth Warren from Massachusetts dropped out of the race. Though she was once considered a frontrunner for the Democratic nomination, Warren didn't win any of the states that have held primaries or caucuses so far. Her decision leaves three Democrats still seeking the nomination former Vice-President Joe Biden, U.S. Representative Tulsi Gabbard from Hawaii and U.S. Senator Bernie Sanders from Vermont. That group of three has been reduced from a total of 28 Democrats who were running at some point.

另一场民主党总统候选人的竞选活动已经暂停。昨天，来自马萨诸塞州的美国参议员伊丽莎白·沃伦退出了竞选。虽然沃伦曾被认为是民主党提名的领跑者，但她没有赢得任何一个已经举行初选或预选会议的州。三名民主党人仍然在提名总统候选人，他们是前副总统拜登、来自夏威夷的美国众议员图尔西·加巴德和来自佛蒙特州的美国参议员伯尼·桑德斯。但现在28位民主党候选人，实际上已剩下二人激战。

On the Republican side, there were a total of four candidates including incumbent President Donald Trump but only two remain and the president has dominated all of the Republican contests that have been held. The next big date on the primary calendar is next Tuesday, March 10th, six states will be holding Democratic primaries. Five of them will hold Republican primaries whoever wins the most delegates in all of these ongoing contests is likely to become his or her party's nominee for president.

共和党方面，包括现任总统唐纳德·特朗普在内共有四名候选人，但现在只剩下两名，而且特朗普主导了所有已举行的共和党竞选活动。初选日历上的下一个重要日子是下星期二，3月10日，六个州将举行民主党初选。其中5个州将举行共和党初选，无论谁在的竞选中赢得最多的代表，都有可能成为所在政党的总统候选人。