For at least four decades, people have been building tools called debuggers.

在过去的至少四十年里,人们一直在做一种叫做调试器的工具。

麻省理工公开课 - 计算机科学及编程导论课程节选

As I said, I would prefer to do something that uses an accessor that I just wrote.

来完成这个操作,因此p，Cartesian是一种访问器,它可以访问里面的数据。

麻省理工公开课 - 计算机科学及编程导论课程节选