There can be no achievement without diligence and self-confidence.

成功离不开奋斗和自信心。

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Without diligence your hiring costs, or indeed ingest costs, become insupportable.

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Without due diligence, though, "bad books just sort of sift in, like dust, " said Mr. McMurtry, who purges his collection at least once a year.

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Just as you never take off before doing all the checks, you should never start a project without thorough due diligence.

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