随着奥运会规模的不断扩大，奥运物流的作用也越来越突出，越来越受到各举办国的重视。

With the continuous expansion of the scale of the Olympic Games, the Olympic logistics is taking an increasingly prominent role to the host country.

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对杭州湾AIS岸基网络的基站选址、系统结构、功能以及对杭州湾水运物流的作用进行了研究。

Also, the paper researches position selection, system construction, function of AIS base network and benefit to water carriage logistics of Hangzhou Bay.

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它的作用不是用来遮挡放射性排放而是阻止放射性烟尘和其它物质的释放，以及遮挡雨水以防止雨水携带污染物流入地下水。

Its purpose is not to shield radioactive emissions but to prevent the release of radioactive dust and other materials, and to keep out rainwater, which could carry contaminants into the water table.

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