在讨论这个问题，我想提四个不可或缺的原则是：勤奋，敬业，恒常，并准时。
While discussing this subject, I'd like to mention four indispensable principles: diligence, devotion, constancy, and punctuality.
在讨论这个问题，我想提四个不可或缺的原则是：勤奋，敬业，恒常，并准时。
While discussing this subject, I'd like to mention four indispensable principles: diligence, devotion, constancy, and punctuality.
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