U 经度 distance east or west of the Greenwich meridian, measured in degrees
词汇搭配
介词+～
line of ～经线
句型例句
The city is at longitude 21° east.这个城市位于东经21度。 Terrestrial longitude is measured in degrees east or west of the Greenwich meridian.地球的经度是用格林尼治子午线向东或向西的度数来表示的。