And so, in case we have contingencies and things that we cannot accomplish within the duration of the space walk, we have a buffer, I mean, in order to be able to complete the... what we want to accomplish.
所以，万一我们在太空行走的过程中遇到突发事件或者无法完成的事情，我们有一个缓冲器，我的意思是，为了能够完成……我们想要完成的。
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