The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools.
人生的期望在于勤奋;想把工作做得完美无缺的机修工，必须先磨砺工具。
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Diligence
人生的期望在于勤奋;想把工作做得完美无缺的机修工，必须先磨砺工具。