It could be a bit problematic, legally speaking.

从法律上说，可能是有点问题。

《柯林斯英汉双解大词典》

Legally speaking, I have no rights at all.

从法律角度来说，我任何权利都没有。

youdao

Legally speaking, there will be a loose affiliation.

合法的说，会有一个很松散的联系。

youdao

Of course KPMG will do anything, legally speaking, to keep GE as a client.

FORBES: GE Auditor KPMG: Supporting Their Tax Strategy For 102 Years

To make matters muddier still, it is still not clear what the investment banks have done wrong, legally speaking.

ECONOMIST: The Wall Street settlement

The used car dealer may feel better because, legally speaking, he has disclosed to you that the car is garbage.

FORBES: Harvard Placebo Study Was Seriously Overhyped