If it's a legal matter you need to seek professional advice.

如果这属于法律问题，你就需要进行专业咨询了。

《牛津词典》

What is the best professional advice you've ever received?

你受到的最好的专业方面的建议是什么？

youdao

A: I don't know about that. Maybe I should find a lawyer for some professional advice.

甲：我不晓得，也许我应该向律师征询一下意见。

youdao

That is the advice of Steve Langerud, director of professional opportunities at DePauw University in Indiana.

VOA: special.2011.05.06

He says this advice is for professional writers as well as school children writing papers.

VOA: special.2009.10.12

The law is quite clear: Firms providing investment services and professional advice to pensions are fiduciaries.

FORBES: Murders and Pensions: The Need for Forensic Investigations (March 28, 2006 )

Get some solid professional advice, and do it before this unique year is gone.

FORBES: "A Perfect Storm" In 2010: It's Not Too Late To Speak To Your Estate Planning Adviser

Professional advice may become even more important to avoid the risk of outliving assets.

FORBES: Retirement Spoiler: When Things Don't Go As Planned