对于非固定步数的长任务，可以使用这种模式。

You use this mode for long tasks with no fixed number of steps.

youdao

根据上一次的人口统计调查(2003)，估计马耳他在当年年末的人口数(包括非马耳他居民)为399,867。

According to the last demographic survey (2003), the estimated population of the Malta at the end of that year (including non-Maltese residents) was 399,867.

youdao

因此，如果涉及非ascii字符，那么列中可以存储的最大字符数可能会减少。

Therefore, the maximum number of characters that can be stored in the column might be reduced if non-ASCII characters are involved.

youdao

I want to show you how easy it is to change the code. But, notice, once I've added this I actually have a problem. This is now an under-constrained problem. I have more unknowns than I have equations.

我加上这个条件后,我马上面临一个问题了,这就是现在是一个非约束性问题了,我的未知数比方程数多,你从代数中可以知道。

麻省理工公开课 - 计算机科学及编程导论课程节选