Reading at meals is considered rude in polite society.

就餐时阅读在上流社会被认为是失礼之举。

Greed is not something to admit to in polite society but acquisitiveness still motivates an awful lot of people.

在上流社会，贪婪是不能承认的，但贪婪仍然是很多人的动力。

The subject was rarely mentioned in polite society.

【society】这个话题在上流社会很少提起。

Environmental sensitivity is now as required an attitude in polite society as is, say, belief in democracy or disapproval of plastic surgery.

在上流社会，对环境的敏感就如同信仰民主、反对整容一样，是一种不可或缺的态度。

You don't generally use it in polite society, so you have to be careful who you are with when you use it.

在上流社会一般不会用，所以用的时候要注意和谁在一起。

" She just sits in her room, not moving a finger; she has not the slightest desire to do something useful, and that is why she thinks of such absurd things that one can hardly mention them in polite society" .

“她只是坐在自己的房间里，一动不动，一点也不想做有用的事情，所以才想着上流社会都谈不上的荒唐事”。