No conjecture can be offered on the subject .
关于这个问题不可臆测。

The hippies' etymology is contentious .
关于嬉皮士的语源是有争议的。

How are you getting along with your work ?
（关于）你的工作怎么样了？

I don't know anything at all about dickens .
关于狄更斯我一无所知。

He is wrong in respect of new novels .
他关于新小说的观点是错误的。

I read some pamphlets on anarchy .
我读了一些关于无政府主义的小册子。

The hippies etymology is contentious .
关于嬉皮士的语源是有争议的。

Wild rumors were circulating about her .
关于她的荒唐谣言正到处传播。

I am at a loss respecting his whereabouts .
关于他的下落，我一无所知。

We want to be quite clear on this point .
关于这一点，我们要完全弄清。