然而，当我们把自己放在极端环境时，就给我们的这个自然能力加重了负担。

However, when we put ourselves in extreme situations that tax its natural capabilities, it's up to us pick up the slack and help it perform.

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在很多学校，计划和评估的需求常流于形式，既浪费了老师时间，又加重了负担。

In too many schools, planning and assessment requirements have become formulaic burdens which simply waste teachers' time.

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另一个问题就是，复杂的系统和检票过车给工作量已经很重的铁路工作人员加重了负担。

Another problem is that the complicated system and check-in process add to the already heavy workload of the railway workers.

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