Sheets are strung across streets to block snipers' line of site.

捆绑起来的各种片状物阻碍着狙击手们的视野。

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The difficulty is primarily due to the lack of line of site between base stations, or towers, and the subscriber.

困难主要是在基站（或者发射塔）与用户之间缺乏直达线路。

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I just found a new social media site targeting moms for Samsung, specifically for the company's extensive line of washers and dryers.

我刚发现一个新媒体网站，目标为使用三星产品的妈妈们，具体产品为该公司的延展线洗衣机和烘干机。

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The other day I was standing in line a bagel store and I counted seven screens (phones, flatscreen TVs, computers) within my clear line of site.

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If an aggressor launches a nuclear device of whatever size and detonates it above the atmosphere and in the line of site of its target country, the x-rays and gamma rays emitted by the blast will cause an electromagnetic pulse, or wave a million times stronger than the strongest radio wave.

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Also, since radio waves sometimes arrive at your device not directly from the radio tower but rather by being bounced off a building or hill, these signals may be much lower in signal strength than if you had a clear line of sight view to the cell site.

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