If it exists, it sees if it is atom.

如果存在该参数，就判断它是否是atom。

youdao

I don't know if it exists yet or not.

我不知道是否存在。

youdao

Uninstall the previous version, if it exists.

如果存在以前版本的话就将其卸载掉。

youdao

Second question, though, is: Does the soul, even if it exists, survive the destruction of the body?

第二个问题,即使灵魂存在,在肉体被摧毁后,灵魂是否能存活

耶鲁公开课 - 死亡课程节选

I don't know if it exists yet or not.

我不知道是否存在。

麻省理工公开课 - 固态化学导论课程节选

And if it is just one thing, you could tell a story in which it exists; you could tell a story in which it doesn't exist.

所以,如果它只是一个物体,你只能说它存在,或是不存在

耶鲁公开课 - 死亡课程节选

Do you have any idea how much people want to bring the case if it exists?

NEWYORKER: A Dirty Business

That object, if it exists, is predicted to have an orbital period of 26m years.

ECONOMIST: X marks the spot

If it exists anywhere, he said, it is in the mind (and the Internet postings) of August Kreis.

CNN: An unholy alliance