In judicial practice, although retroactivity of criminal law is easily grasped, there still exist some difficult problems in dispute, which need further discussing.

在司法实践中，虽然对刑法的溯及力问题一般比较容易把握，但也存在一些有争议的疑难问题，需作进一步探讨。

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The retroactivity of administrative act is limited to the executive force.

行政行为的追溯力仅限于执行力。

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The retroactivity of construction of law refers to if the new construction of law can apply to the past event and behaviour.

法律解释的溯及力是指新的法律解释颁布后对其颁布前的事件和行为是否适用的问题。

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Will lame-duck Congressmen who lost their election punt this dirty deal to the next Congress, promising passage and retroactivity?

FORBES: Obama And Republicans Race Against The Clock In Tax Deal

Risk of retroactivity declines as we reach the end of the year.

FORBES: Payday for Trust Babies

In New Jersey, where a new tax was passed in July 2002 but made retroactive to Jan. 1, 2002, a trial judge ruled in favor of the estate of a woman who died during the period of retroactivity.

FORBES