It is hard to define precisely what constitutes quality of life.

很难准确界定生活质量是由什么构成的。

youdao

Human nature is one of those things that everybody talks about but no one can define precisely.

人性是那种每个人都在谈论但没有人能够精确定义的东西。

youdao

BRIN: As for "Don't be evil," we have tried to define precisely what it means to be a force for good-always do the right, ethical thing.

BRIN：关于“不干坏事”我们曾经试做过详细的解释。它的意思其实是做好事-只做道德意义上的好事。

youdao

"I think we have to define more precisely who we are, what we want, what kind of influence we can exert now in Europe or in the world, ".

VOA: standard.2009.12.30

Authenticity is hard to define precisely.

FORBES: Editor's Note

Last month, the US and Niger struck an agreement on the status of US forces as the two nations "define precisely what kind of military presence we may have in Niger in the future", a spokeswoman for the US state department said.

BBC: Mali conflict: US deploys 100 troops to neighbour Niger

It may not be possible to define software patents precisely, it may be easy for patent applicants to game any software-specific rules, and we have to find a way to remain in compliance with our treaty obligations.

FORBES: Two Challenges to Fixing Software Patents (Part 2 of 3)