Serious situations or significant achievements are not formed overnight but are the result of long-term accumulation and development; similar to 'Rome wasn't built in a day'.
这家公司取得今天的成就，冰厚三尺，非一日之寒，是全体员工多年努力的结果
The achievements of this company today, like ice three feet thick not formed in a single day, are the result of years of hard work by all employees.
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