Conditions are good in school. It's inexcusable not to study hard.

学校环境好，不用功念书可说不过去。

《新英汉大辞典》

Mr. Ban opened the meeting by saying it would be "morally inexcusable" not to act.

潘基文在峰会的开幕式上说，如果不采取行动，“在道义上难辞其咎”。

youdao

To me it is absolutely inconceivable and inexcusable for the product owner to not be at every one of these tests.

我认为，用户主管不参与到每一个用户测试是难以置信的，也是不可饶恕的。

youdao

But that does not excuse the inexcusable.

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That the leaders of Wachovia committed egregious, inexcusable errors is not in dispute.

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But it is just inexcusable to me that she not recognize her position as a woman leader.

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