It is unrealistic to believe perfection is an attainable goal.
相信完美可以企及是不现实的。
They set the limits of performance attainable.
它们确定着可达到的运行限度.
If objectives are to be meaningful to people, they must be clear, attainable, actionable, and verifiable.
如果目标对人们是具有意义的, 则目标必须是清晰的, 能达到的, 可以行动的, 以及可供检验的.
But perfection is not attainable for us faulty and diverse humans.
来自SA
If we had been, it would have been less attainable for them.
来自BBC
This is a challenging but attainable goal for advancing human experience and knowledge.
来自VOA