Rattlesnakes occur in the warmer, drier parts of North America.

响尾蛇出现在北美温暖干燥的地区。

《牛津词典》

Does it look like something might occur in nature?

这看起来像是会在自然界里发生的吗？

youdao

Does it look like something that might occur in nature?

这看起来像自然界中可能存在的事物吗？

youdao

Cluster headaches occur in cycles: sufferers can experience several headaches a day for weeks or even months on end.

VOA: standard.2009.12.17

.. I wanted to just give some-- often the inventions that occur in finance, they seem in a way obvious.

我想说一些-,在金融领域常见的发明，从某种程度上来看，他们是很显见的。

耶鲁公开课 - 金融市场课程节选

You will like using "there is no" because it helps you to explain when you don't want something to occur in a situation.

你会喜欢“there is no”句型的，因为它可以用来表达你不希望在某种情况下发生某事。

There is no 课堂 - SpeakingMax英语口语达人

That, you know, these infections do occur in that area in heterosexuals as well.

NPR: Tracking a New Strain of Drug-Resistant Staph

And how can they foresee any potential act of God that might occur in the future?

FORBES: The Bittersweet Challenges Of Being Netsuite

Analysts expect the first listing to occur in the second half of this year.

FORBES: Foreign Companies to List Shares in Shanghai