首 页 > 教育频道 > 正文

[双语] 火星极地冰盖正融化

2011-09-30 08:43:00  来源:国际在线专稿  编辑:周光宇   

  Huge sections of the ice around the south pole of Mars are melting in this summer's warm weather.

  在这个夏日炎热的天气里,火星南极周围的巨大冰面正融化。

  The ice cap - made of solid carbon dioxide at temperatures as low as -143 - 'boils' every summer (or, more correctly, 'sublimates' directly from solid form to gas), leaving huge pits in the Martian polar ice.

  低至零下142度的气温下,由固体二氧化碳形成的冰冠每个夏天都会“沸腾”(或者更准确地说是从固体直接“升华”成气体),并在火星的极地冰里留下巨大的凹点。

  The 'gold' pits isn't likely to be ferried back to Earth, though - scientists remain unsure of the chemical composition of the yelllow, shimmering dust that lines the pit walls every 'summer'.

  可是那些在凹点的金线不太可能被带回地球,所以科学家还不能确定这在每个“夏天”都在凹点排成线而且发光的黄色灰尘的化学成分。

  Martian summers are rather chilly in comparison to our own - the temperature usually remains below zero degrees centigrade. It's still 'warm' enough, relatively speaking, to make the 'dry ice' of the polar ice caps boil off.

  火星的夏天跟我们的相比非常寒冷,气温通常保持在零摄氏度以下。相对将极地的冰冠气化成“干冰”,这样的温度仍然足够“温暖了”。

  Part of the fascination of Mars for both scientists and writers has always been how similar the planet's weather is to ours - with seasons, currents, and polar ice caps. Mars has no surface water, however.

  科学家和作家都对火星着迷的部分是,火星的气候、季节、气流和极地冰冠和地球非常相似但是不同的是,火星表面没有水。

  Scientists often study Mars's weather in the hope of better understanding our own. There have also been academic studies into the feasibility of 'mining' Mars for precious metals - but the academics concluded glumly that it was unlikely we would ever find enough to make it worth the trip.

  科学家们经常研究火星的天气,希望可以更好地理解地球的天气。也有一些探讨在火星开采贵金属可行性的学术报告,然而学术结论是令人郁闷的,因为采得的数量还不够我们往返的路费。

  The picture here was taken by HiRise - the High Resolution Imaging Science Experiment, one of the largest telescopes in deep space. It is mapping the surface of Mars from an altitude of 300km from the safety of the Mars Orbiter - and has even taken 3D pictures of the surface of the planet.

  这张照片是由HiRise(最大的外太空望远镜之一)的高分辨率成像科学实验拍摄的。它从高度300km的火星人造卫星上绘制出火星表面的图像,它曾经还绘制出这个星球表面的3D图片。

  编译:董璐莹

(国际在线独家译稿  未经允许请勿转载)

更多双语资讯请点击>>

相关
Free Chatty corner
播放
下一时段
留言板
国际在线
正在播出:

双语资讯

轻松英语课堂

西边取经

大话英语

电影放映厅

开心一刻

地址:北京市石景山路甲16号 邮政编码:100040
中国互联网举报中心中国互联网举报中心 违法和不良信息举报电话:010-68891032 新闻从业人员职业道德监督电话:010-68892232 68892233 监督邮件:jchsh@cri.com.cn
中国互联网视听节目服务自律公约 网络传播视听节目许可证 0102006 京ICP证120531号 京ICP备05064898号 京公网安备11010702000014
网站运营:国广国际在线网络(北京)有限公司
中国国际广播电台国际在线版权所有©1997-2017 未经书面授权禁止复制或建立镜像