日夜兼程

ri4 ye4 jian1 cheng2

to travel day and night

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日夜兼程

rì yè jiān chéng

press forward day and night alike (without halting to rest); by forced marches day and night; ride day and night, and take no rest; travel day and night

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日夜兼程|日夜兼程 [rì yè jiān chéng] ► to travel day and night