On the Chesapeake Bay, historic efforts are underway to protect waters that touch the lives and livelihoods of 17 million people.
在切萨皮克湾正在进行具有历史意义的努力，以保护触及1千7百万人的生命与生计的水资源。
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The transformation on mathematical basis of modern historic chart, the correction of the horizontal coordinate and depth data on the charts for the waters off Zhejiang coast are elaborated.