The company needs to improve performance in all these areas.

公司需要在所有这些方面改善业绩。

It was to build my confidence for public speaking that I took the course, not to improve performance in examinations.

我上这门课是为了增强我在公开演讲方面的信心，而不是为了提高考试成绩。

The new management techniques aim to improve performance.

新的管理技术旨在提高效率。

Studies have shown that exercising for as little as ten minutes before handling a task can improve performance by increasing the flow of blood to the brain.

研究表明，在处理一项任务之前，只要锻炼十分钟，就可以通过增加流向大脑的血液量来提高工作效率。

This can improve performance.

这可以提高性能。