The ruling set a precedent for future libel cases.

这项裁决为今后的诽谤案提供了判例。

《牛津词典》

Whether this will set a precedent for many other aggrieved groups is doubtful.

值得怀疑的是，这是否能成为其他权力受到不法侵害的民族可以遵循的先例呢？

youdao

Whether this will set a precedent for many other aggrieved [3] groups is doubtful.

这是否会成为其它许多受过不公平对待的种族的先例尚且无法确定。

youdao

What move by a former president set a precedent for those to serve after him in economic matters?

CNN: Lesson plan: The roles of the president

The decision could set a precedent for how the FDA deals with expensive, marginally effective cancer drugs in the future.

FORBES: Are Death Panels For Overpriced Cancer Drugs Coming To The FDA?

The case, to be heard in Seattle, may set a precedent for how such intellectual property rows should be settled.

BBC: xbox 360