俄罗斯正加紧在引擎发生故障后滞留太空的火星探测器的拯救任务。
Russia RACES to save its mission to Mars after engine glitch leaves probe dead in space.
而且，由于平均游泳速度约为3千米每小时(2英里每小时)，所以单单一项拯救任务就要耗费半个多小时。
And, since average swimming speed is about 3kph (2mph) even a single rescue mission can take more than half an hour.
全体船员的任务是通过溶解他大脑深处的血块来拯救这个人的生命。
The crew’s mission is to save the man’s life by dissolving a blood clot deep inside his brain.
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