If they orbited each other any more quickly, say, ontheorder of three minutes per orbit, the stars would pull so close that they would begin siphoning helium off one another.
Moreover, they will also be keeping a close eye onthe 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。
3
The only other mapping in theOrder class is a simple property mapping for the Date property. We will not spend time on that here, so you can closetheOrder mapping file.