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。

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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。

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Adequate exercise, healthy eating and regular sleep are also keys to staying in top shape for exams.

充足的锻炼、健康的饮食、以及规律的作息对保持最佳考试状态也至关重要。

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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