Penal statutes must not be given retroactive effect.

刑法不得溯及既往.

口语例句

It is a complicated issue whether the jurisdiction of international tribunals has a retroactive effect.

国际裁判法庭的管辖权是否具有溯及力,是个复杂的问题.

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This invalidation not have retroactive effect, otherwise provided for in the laws of the Region.

该法律的失效, 除香港特别行政区的法律另有规定外,无溯及力.

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Thellos not have retroactive effect, otherwise provided for in the laws of the Region.

该法令的掉效, 除香港特别行政区的法令另有规定外,无溯及力.

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