Visitors may arrive at sea or air borders of the united states aboard a participating commercial carrier . application forms are available at the port of entry or from a participating airline or cruise company 旅游人仕可以经由陆路，海路，或乘坐飞机进入美国。申请表格会在入境美国之前，由入境处或参与这计划的航空公司派发。
The observatory provides a web page on climatological information of major cities in the world for travellers . the data are mainly extracted from the world meteorological organization publication 1961 - 1990 global climate normals compiled by national climatic data center of the united states . they are 30 - year average values for the period 1961 - 1990 天文台为旅游人仕提供的世界各地城?气候资料网页，资料内容节录自美国国家气候数据中心编制、世界气象组织出版的1961 - 1990globalclimatenormals ，气象数据均为1961至1990这30年的平均值。
The observatory provides a web page on climatological information of major cities in the world for travellers . the data are mainly extracted from the world meteorological organization publication 1961 - 1990 global climate normals compiled by national climatic data center of the united states . they are 30 - year average values for the period 1961 - 1990 天文台为旅游人仕提供的世界各地城?气候资料网页，资料内容节录自美国国家气候数据中心编制世界气象组织出版的1961 - 1990 global climate normals ，气象数据均为1961至1990这30年的平均值。
