It could be just natural causes, but security guards are an underprivileged group.

这或许是一次自然死亡，但是保安都是弱势群体。

youdao

The eyewitness says the two vehicles first attempted to enter through the airport, but were refused access by security guards. He said the cars then drove over to the AMISOM entry way.

这名目击者说，这两辆车原本试图进入机场，但是被安全警卫拦阻，于是就转往非盟维和部队的营地入口。

youdao

Security guards intercepted him, but he was undeterred.

保卫截住了他，但是他并没被吓住。

youdao

The eyewitness says the two vehicles first attempted to enter through the airport, but were refused access by security guards.

VOA: standard.2009.09.17

The breakthrough was announced in a corridor of the cavernous U.S. Capitol building, which was devoid of all but security guards, reporters and key congressional aides.

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Leading figures do have security guards but very discreet ones.

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But raising the standards of private security guards to a level that would reassure the public will not be easy.

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