求翻译：首先，讲一下这个空间和时间的问题。这是双方共同决定的，但是其具体确定则有说法。关于时间，通常确定时比较简单，只要两相情愿就行了。主要是大家都方便。是什么意思？

First, space and time to talk about this issue. This is a mutual decision, but it sure is a specific statement. About time, usually relatively simple to determine when, on the line as long as consensual. Mainly we are convenient.

First of all, the issue of the spatial and temporal scales. This is a mutual decision, but it is not true that the specific identification. With regard to time, usually when determining a relatively simple, as long as the two wishful thinking. Mainly are easily accessible to everyone.

First, speaks this spatial and the time question.This is both sides decides together, but it true rule has the view specifically.About time, when usual determination quite is simple, so long as were willing is good.Mainly is everybody is all convenient.

正在翻译，请等待...

First of all, tell this space and question of time. This is what both sides decide together, but it confirms specifically that there is a statement. About time, simpler while usually confirming, so long as mutual consent. Mainly it is convenient for everybody.