美国绿道 American Greenway

绿道（Greenway）是一种线形开敞空间，它通常沿着自然廊道建设，如河岸、河谷、山脉或者是在陆地上沿着由铁道改造而成的游憩娱乐通道、一条运河、一条景观道路或其他线路。绿道开放空间把公园、自然保护区、风景名胜区、历史古迹及人口密集地区等连接起来。

Greenway is a linear open space, which is usually constructed along the natural corridor, such as rivers, valleys, mountains, a recreational corridor transfered from railway, a canal, a landscaping road and other routes. The open space in greenway connects parks, natural reservation zones, scenic spots, historical sites and densely populated areas.