Her use of obscene language offends against the proprieties.

她使用下流的语言是很失礼的事。

youdao

Harassment in any manner or form on the site, including via email or chat or by obscene or abusive language is strictly forbidden.

网站上严禁任何形式或方式的骚扰，其中包括通过电子邮件、聊天或者淫秽或侮辱性语言进行的骚扰。

youdao

That was when Microsoft forced its myriad Websites to adopt a system that analyzes content according to the degree to which it contains sex, nudity, violence or obscene language.

CNN: The Press Muzzles Itself