During spring and summer, the surface of Mars is covered by strong storms.
在春季和夏季，火星表面被强风暴覆盖。
After leaving the earth last summer, Zhu Rong circled Mars for several months and landed on it in May.
去年夏天离开地球后，祝融号围绕火星飞行了几个月，并于今年5月登陆火星。
Last week, the evidence for life on Mars received another boost, when scientists at Nasa reported enormous plumes of methane emanating from the planet's north during the summer months.
上周，又有发现一个火星上存在生命的证据。夏季的几个月里，NASA科学家发现了大量源自火星北部的甲烷气。
US and European efforts to send joint missions to Mars will stay in the slow lane over the summer while the Americans organise their finances.
由于美国方面需组织财政，美国和欧盟向火星发送联合任务的努力将减少。
An image combining orbital imagery with 3-d modeling shows flows of what scientists believe to be water that appear in spring and summer on a slope inside the Newton crater on Mars.
一个结合了3 - D轨道成像技术的图像展示出了科学家们推测的在春季和夏季火星牛顿陨石坑的陡坡上有水的出现。
Her flight last summer was an assembly mission to help complete the space station, designed as a stepping-stone for returning to the Moon for extended exploration and, later, on to Mars.
她去年夏天的飞行是为了完善空间站的召集任务，被认为是回归月球的扩展探索以及后来对火星的探索。
Visible on the above image right are two flat top mesas in southern Mars, where the season is changing from Spring to Summer.
可以看到上面影像右侧是两座位于火星南部的平顶山，而那里的季节正从春天向夏天转变。
Thee slopes appear during the warm summer months on Mars, then vanish when the temperatures drop.
在温暖的夏季月份，这些斜坡才会出现，随着气温降低，斜坡渐渐消失。
A new NASA Mars mission called Phoenix is set for launch this summer, and one of the scientists involved said he is eager to test the new theory about life on Mars.
NASA一个新的，名为‘凤凰’的火星任务将准备在今年夏天启动。一个参与其中的科学家说盼着能对火星是否有生命这一新的理论进行实验。
A new NASA Mars mission called Phoenix is set for launch this summer, and one of the scientists involved said he is eager to test the new theory about life on Mars.
NASA一个新的，名为‘凤凰’的火星任务将准备在今年夏天启动。一个参与其中的科学家说盼着能对火星是否有生命这一新的理论进行实验。
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