详细解释:n. 波特兰(美港口)
词型变化：
名词:Portlander英语解释：
名词 portland:
freshwater port and largest city in Oregon; located in northwestern Oregon on the Willamette River which divides the city into east and west sections; renowned for its beautiful natural setting among the mountainslargest city in Maine in the southwestern corner of the state例句：
Able to set and harden under water, as Portland cement.在水中变硬的能在水下定型并变硬的，如波特兰水泥