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“冰冻三尺非一日之寒”，字面意思是“冰冻了三尺，并不是一天的寒冷所能达到的效果（It takes more than one cold day for the river to freeze three feet deep）”。比喻一种情况的形成，是经过长时间的积累、酝酿的，与英文谚语“Rome wasn't built in a day”意思相近，表示“it takes a long time to do a task properly, and you should not rush it or expect to do it quickly”。
Rome was not built in a day, and Kahn and Tom both know there is tough work ahead.
Rome was not built in one day. Success is founded on the basis of patient pursuit that can never be impeded by temporary failures.