spare no pain 怎樣用﹖

spare no pains doing/to do something不遺餘力地做某事：

The hotel staff spared no pains to ensure that our stay was as enjoyable as possible.
旅館工作人員對我們照顧得無微不至，盡量讓我們住得舒適。


spare yourself the pain不做某事，可節省氣力：
If you have a cd burner, you can spare yourself the pains of making boot disks.

courtesy:

１．禮貌：

They did not even have the courtesy to apologize.
It would only have been common courtesy to say thank you.
Do me the courtesy of listening to what I have to say.請聽我說幾句話。

２．(by) the courtesy of someone承蒙某人的好意：

This programme comes by courtesy of a local company.


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