大家经过多少年的努力，才取得今天的成绩。
Through years of our painstaking efforts, we have at last achieved what we have today.
经过多少年以后，人类对火有了进一步的认识，知道了如何控制它，如何 多方面 地使用它。
Throughout the ages he has learned more about fire, how to control it, and how to use it in many ways.
不要匆忙地确定关系—真爱可以等待。想想还要经过多少年你们才会结婚吧！而这婚姻将一直延续到你们生命的终点。
Avoid getting into a relationship hastily - true love waits. Think about how many more years until you are going to get married to start this journey until death.
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