So there already are some approaches like this that are working, but there's more that needs to be done.

现在我们已经有相关的治疗方法,但还有很多地方需要改进

耶鲁公开课 - 生物医学工程探索课程节选

What do you think is one thing that should be improved in London?

你觉得伦敦在哪个地方还需要改进？

伦敦的现代化 - SpeakingMax英语口语达人

- I mean that-- what began as, ah we'll do this this weekend turned out to be like a 100-hour project to revamp this whole thing.

我是说，这周末我们要做的是,改进整个工程，但这可能需要花100个小时。

哈佛公开课 - 计算机科学课程节选

Two will mean it's good but you could have done a little better, and one would mean you need to shape it up.

二分意味着你做的不错但是还可以更好些,一分则代表你需要对它做些改进

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选