即便在最有利的情况下，在软件系统中编写业务规则也是一项必要的挑战性任务。

Encoding business rules in software systems is a necessary and challenging task at the best of times.

youdao

在最近几年里，企业之间的集成和互操作性已经成为软件工程师和企业的一个挑战性任务。

Integration and interoperability between enterprises has been a challenging task for both software engineers and enterprises in last few years.

youdao

尽管还有很多工作要做，但近年来的趋势表明，解放军正开始将其现代化部队投入运营，承担新的、更具挑战性的任务。

While much work remains, trends in recent years indicate the PLA is beginning to operationalize its modern force, taking on new and more challenging missions.

youdao

So my challenge to you, and I know Professor Guttag can do this, my challenge to you is, a year from now, come back and look at code you wrote here.

因此我这里有个具有挑战性的任务，我知道Guttag也可能会说这个任务，我的这个任务就是，一年以后，回头来看,你之前写过的代码。

麻省理工公开课 - 计算机科学及编程导论课程节选