You couldn't actually be rude to them, but you couldn't help feeling about them the same way that, say, a Vietnam veteran would feel about someone who wears combat gear to Neighborhood Watch meetings.

你没办法冲他们发火，但始终有种怪怪的感觉。 就好像一个越战老兵看到有人穿着战斗服参加邻里互助会时的感觉一样。

youdao

This system would work fine on a personal server where you're the only one accessing it, but in the real world, it would be impractical (and rude) to pull the feed every time someone wants to read it.

这个系统将在个人服务器上工作得很好，因为只有您访问它，但在现实世界中，每当有人需要阅读提示时就把它拖走是不实际的（也是粗暴的）。

youdao

But then I thought that would be rude and sometimes it's nice to hear genuine news, such as someone is getting engaged or having a kid.

但我转念又想，这有点不太礼貌，而且有时候听到真诚的消息也挺好的，比如有人订婚了，或者有孩子了。

youdao

It would be rude to be speaking to someone face-to-face then answer a phone call, but I can be talking to someone, or even sitting listening to a professor in a class, and also quickly answer a text message at the same time.

FORBES: Young People, Stop Just Texting Me and Give Me a Call Once in a While PLZ! Part Deux