他的要求是不合理的，因为他知道我负担不起。
His request is unreasonable in that he knows I can't afford it.
他的要求是不合理的，因为他知道我们负担不起。
His request is unreasonable in that he knows we can't afford it.
目前我国城市供水价格不合理，既加大了供水单位和财政的负担，又造成用水的浪费。
Now the water supply price is not rational in cities of our country this increases the burden of water supply and financial institutions and causes the waste of water.
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