with due expedition and without delay
立即行动，毫不迟延
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The Contractor shall commence the execution of the Works as soon as is reasonably practicable after the Commencement Date, and shall then proceed with the Works with due expedition and without delay.
承包商应在开工日期后合理可行的情况下尽快开始实施工程，随后应迅速且毫不拖延地进行施工。
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