The ruling should be applied retroactively.

这一裁决应该具有追溯效力。

《牛津词典》

It isn't yet clear whether the new law can actually be applied retroactively.

这项新法令是否具有追溯力还不清楚。

《柯林斯英汉双解大词典》

The cap won't apply retroactively.

l该封顶计划没有追溯力。

youdao

Ten U.S.states have enacted Iran divestment legislation, and an amendment to the House bill would retroactively expand protection to those actions.

VOA: standard.2009.04.28

While Congress and the administration consider what can be done retroactively to recover funds, Franks says the government should use leverage it now has as 80 percent shareholder in AIG.

VOA: standard.2009.03.17

In neither case were taxes collected retroactively but they apparently resumed without delay after each reauthorization.

FORBES: Congressional Waste: The FAA and Airlines Taxes

Congress has a history of reinstituting expired tax code provisions and applying them retroactively.

FORBES: The IRA Charitable Donation in 2012

But after accountants, lawyers and families howled, the chastened pols repealed the repeal retroactively.

FORBES: Throw Momma From Her Private Jet--Not From The Train