No matter how you "enhance" enclosures, they do not allow for freedom, a natural diet or adequate exercise.

无论你如何“改善”圈养环境，它们都没有自由、自然饮食、或足够的运动。

youdao

If living outdoors with running room, adequate exercise should be no problem.

如果生活在户外与运行室，适量运动，应该没有问题。

youdao

She maintained wellness by proper diet, adequate exercise, and healthy habits.

通过合理的饮食，充足的运动，以及健康的生活习惯，她的健康状况维持的很好。

youdao

When he resigned, Benedict cited his advanced age as the reason, saying he no longer had the strength for "an adequate exercise of the Petrine ministry".

BBC: Ex-Pope Benedict returns to Vatican

After having repeatedly examined my conscience before God, I have come to the certainty that my strengths, due to an advanced age, are no longer suited to an adequate exercise of the Petrine ministry.

CNN: Full text of Pope Benedict XVI's declaration

"After having repeatedly examined my conscience before God, I have come to the certainty that my strengths, due to an advanced age, are no longer suited to an adequate exercise of the Petrine Ministry, " he added.

WSJ: Pope Benedict XVI to Resign