To learn our lessons in school, we must work hard and not give up whenever we come across anything difficult.

在学校里想要学好功课，我们就必须勤奋，在任何时候遇到任何困难时都不要放弃。

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If we would learn our lessons in school, we must be diligent and not give up whenever we come to anything difficult.

如果我们在学校里想要学好功课，就必须得勤奋，任何时候遇到难题都不要放弃。

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For example, we can learn our lessons at home by using a computer instead of going to school.

例如，我们可以通过电脑在家里学习而不用去学校。

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We should learn our lessons from this and accelerate as fast as possible the shift towards decentralized renewable energy such as wind power, all over the world.

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Our financial services industry has yet to learn its lessons from the recent past.

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The prime minister told MPs the UK would "work closely with the Algerian government to learn the lessons of this attack and to deepen our security co-operation".

BBC: Algeria siege: British hostage 'was executed'