No, you may take as long as you need to complete the CFA program; your exam results never expire; and we don't limit the number of times you can sit for each exam level.

不需要。你可以在任何你完成CFA项目所需要的时间内报考(各等级)，你(已通过等级)的考试成绩都不会失效，而且我们不限定你每个等级的报考次数。

youdao

You limit yourself when you do not accept full responsibility for the results you get in your life.

当你不肯为自己生活的结果承担全部责任时，你就限制了自己。

youdao

So you pick a random number less than the number of results and use that as the offset in your LIMIT clause.

这样，你首先获取一个小于行数的随机数，然后根据这个便宜量使用limit得到结果。

youdao

You can even filter the results to exclude inconvenient flight times and limit layovers, though you will likely pay more for your ticket as a result.

BBC: Flip a coin, book a flight