We also know that a long time without change or challenge can lead to boredom, and physical and mental strain.

我们也知道，长时间没有变化或缺乏挑战会导致无聊，造成身体和心理上的疲惫。

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Mental strain can also worsen.

精神过度紧张也可加重。

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Was her long-term pressure has caused the mental strain oversized.

是她长期压力过大导致了精神紧张。

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Ducking a decision often creates bigger problems in the long run, but for the moment, it eases the mental strain.

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She acknowledges that playing a slave was a mental strain.

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Arguably, therefore, mental or physical strain may have played a part in Mr Yeltsin's decision to dismiss his government.

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