Moreover, they will also be keeping a close eye on the sites' surface and atmospheric characteristics in order to gauge their safety for the landing system and rover.
此外，他们还要密切留意这几个地点的地表和大气特征，以确保着陆系统和探测器的安全。
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Too close for comfort: A man makes chapatis as an Air India jet flies over Mumbai's Jari Mari slum on Feb. 3 as it approaches the landing strip at the airport.