市长要求在市中心区域部署强大的警力以震慑犯罪。

The mayor demanded a strong police ___presence in the downtown area to deter crime.

居民们抱怨他们社区缺乏明显的警力部署。

Residents complained about the lack of a visible police ___presence in their neighborhood.

峰会期间，会议中心周围有明显的军事部署。

During the summit, there was a noticeable military ___presence around the convention center.