There is no rule without an exception.

有规则必有例外。

《新英汉大辞典》

There is no rule about the size of the caber, but it's usually the size of a small tree.

没有规定投棒的尺寸，但它通常像一颗小树那么大。

youdao

Remember, there's no rule that says you have to go to a sports centre or buy equipment like swimming suits.

记住，没有规定说你必须去体育中心或购买泳衣等装备。

youdao

"The Supreme Court held that there is no categorical rule denying patent protection for business method patents."

VOA: special.2010.07.16

There's no rule about how you're supposed to use the word "Language."

因为并没有什么,关于应当如何运用"语言"一词的规定

耶鲁公开课 - 心理学导论课程节选

What does count as a violation is an arbitrary taking because that would essentially say, not only to Bill Gates, but to everyone, there is no rule of law.

只有肆意掠夺才算侵犯自然权利,因为从本质上说，那不仅侵犯了比尔·盖茨，还侵犯了其他人，那样就毫无法治可言。

耶鲁公开课 - 公正课程节选

The Fed has no fixed anchor: there is no rule to guide it, only discretion.

FORBES: The Federal Reserve's Crony Capitalism

No rule book has been written that provides guidance on how to fight the war, he said.

CNN: Raiding role for British troops

There can be no rule that permits a baby to die when he can so obviously be saved.

FORBES: Indiana Medicaid Denies Life-Saving Transplant To Baby