不记分？

Not keep score?

youdao

评估团队同意不记分的这些问题，记分箱内输进NA，并在注释页解释原因。

The evaluation team agrees that this question should not be scored. Enter NA into the Score box and explain reasons on COMMENTS page.

youdao

如果两个比赛选手不能在某点上达成一致意见，他们就会重新进行这个环节的比赛，但在这两种情形下，不记分。

When the players cannot agree on the outcome of a point played, and they replay the point. In both cases, no point is scored.

youdao

These won't be graded, you don't have to turn them in, it's just to give you some extra practice if you want while you're studying for the exam.

这些题目不会记分，你们也不需要交上来，只是如果你需要的话，这可以让你,在准备考试的过程中得到更多的训练。

麻省理工公开课 - 化学原理课程节选