We could hear the thunder of distant guns.

我们可以听到远处炮声隆隆。

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It's the story of the Beths and Marissas scattered across America and on military installations around the world, who, like them, hurry through their days listening for the distant sound of guns.

NPR: Waiting and Dreading: Families in War Time

In the not-so-distant past, instructors here say, security officials relied on the "3 Gs" -- guns, gates and guards -- to protect infrastructure from intrusions.

CNN: Inside a government computer attack exercise