The presence or absence of clouds can have an important impact on temperature.

云的有无对气温会产生重要影响。

《柯林斯英汉双解大词典》

The spruce community is not substantially affected by either the presence or absence of moose.

无论驼鹿的存在与否，云杉群落都不会受到实质性的影响。

youdao

For one thing, the presence or absence of moisture is affected by the special qualities of the urban surface.

一方面，湿气的存在与否受到城市表面特殊性质的影响。

youdao

The absence of a security fence - rather than the presence of an enemy society on the outskirts of Israel's population centers - was blamed for the terror that claimed the lives of over a thousand Israelis.

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That, in the end, the absence of the deal is anti-consumer, not the presence of it.

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Lawyers and experts on internet policy say no court case has ever turned on the presence or absence of such an automatic e-mail footer in America, the most litigious of rich countries.

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