The doctors want stricter enforcement of existing laws.

医生们希望现行法律的执行能更严格。

《柯林斯英汉双解大词典》

Existing laws are strict enough that Britain's Olympic shooting team has had to train overseas to avoid falling foul of them.

现有的法律严格到令英国奥运射击队为了不违反法律而只能到海外训练。

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"We have to recognize all the complicated issues that iPS research is engaging and get a sense of how existing laws and policies play out," Caulfield said.

我们必须要认识到，诱导多能干细胞技术涉及到所有相关的复杂问题，并且游离于现存的法律和政策之外。

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And the court did not consider the question of existing laws designed to prevent foreign influence in the political process.

VOA: special.2010.03.12

is actually looking at how to regulate greenhouse gases under existing environmental laws,

其职务是研究在现行的环境法下如何管理温室气体的排放，

全球变暖与国力 - SpeakingMax英语口语达人

The bureau will set rules for the marketplace and enforce existing laws.

VOA: special.2010.07.23

At his coronation, the Duke promised to uphold existing laws and customs in England.

BBC: 1087: William 'the Conqueror' dies

So how many oil companies have been prosecuted for these alleged offenses under existing laws?

FORBES: Pumping Politics

Congressionally imposed restrictions placed on ATF's ability to enforce existing laws should be removed.

CNN: Did we learn nothing from Newtown?