这次会议的主要目的是讨论公司的未来。

The primary ___purpose of the meeting is to discuss the future of the company.

学校的新实验室仅用于研究目的。

The school's new lab will be used for research ___purposes only.

我认为它的目的是让氛围更轻松。

I think the ___purpose of it was to make the atmosphere more relaxed.