The centers are run by an ophthalmic assistant who is trained to conduct a full eye examination, administer diagnostic tests, treat simple ailments and prescribe glasses.

VOA: standard.2010.05.25

And I'm going to do it only using multiplication and addition and some simple tests. All right?

我只能用乘法和加法,以及一些小测试来解决这个问题？

麻省理工公开课 - 计算机科学及编程导论课程节选