Lowell National Historical Park, commemorating the first American textile mills, was established in 1978.

当地的洛厄尔国立历史公园创建于1978年，是为了纪念美国的第一批棉纺织工厂。

youdao

Ray Brown from the National Park Service says two percent of the American population died in the Civil War.

公园管理处的雷·布朗（Ray Brown）表示，美国2％的人口在内战中丧生。

youdao

Ray Brown from the National Park Service says two percent of the American population died in the Civil War.

公园管理处的雷·布朗（Ray Brown）表示，美国2％的人口在内战中丧生。

youdao