More important, though, is the simple courtesy of responding to someone who was nice enough to invite you, even if it is to say that you regret that you will not be able to attend.

更重要的是，因为主人家如此慷慨，回复邀请同时也是出于礼貌——哪怕你不能出席。

youdao

The changes of marriage courtesy, marriage ceremony, etc. are not merely a change of the marriage custom, it is a epitome that rural social culture, social idea change even more.

婚姻礼节、婚姻仪式等的变化不仅是婚姻习俗的变化，更是农村社会文化、社会观念变化的一个缩影。

youdao

To the contrary, if the rental activity does not rise to the level of a trade or business, the fact that it is no longer treated as passive courtesy of the real estate professional rules will not change the fact that the rental income is considered net investment income.

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