As any processor has a fixed set of registers, there is a limit to the number of variables that can be kept in registers at any onepoint in the program.
Oneset of jobs feels worthwhile, while in the other jobs, people can't see the point.
一组工作让人觉得值得去做，而在另一些工作中，人们无法看到这点。
3
Tsonga came close to breaking Nadal at 4-4 in the second set. But one forehand and one backhand error, from 15/30, when in total control of the point, cost Tsonga the opportunity.