由于我们的行程不是很明确，所以要做出计划有点困难。但是在经过许多讨论和多天的长途骑行后，我们终于能准确地预报到达的时间。

Having only a vague idea of where we were going made planning difficult, but after a lot of discussion, and some long days' cycling, we were able to time our arrivals perfectly.

youdao

第9章包含了一个关于如何在并行程序中处理错误的详细讨论。

Chapter 9 contains a detailed discussion of how to handle errors in concurrent programs.

youdao

这个分两部分的文章系列只讨论程序执行时间，不考虑执行程序时的其他重要性质，比如内存使用量。

This two-part article addresses only program-execution time. It doesn't consider other important execution characteristics, such as memory usage.

youdao