N代表北（north）。E代表东（east），W代表西（west），S代表南（south）。东南方：southeast；西南方：southwest；西北方：northwest；东北方：northeast。正东偏北：east by north；正南偏西：south by west；正北偏东：north by east；正南偏东：south by east。
in the east 与 on the east的区别
1.in the east表示我们生活中和地理位置上的绝对方向。如：The sun rises in the east and sets in the west.太阳从东边升起，从西边落下。
The Great Wall begins in the east from the Shanghaiguan Pass and ends at the Jiayuguan Pass in the west.长城东起山海关，西至嘉峪关。
2.on the east表示某事物位于另一事物所朝的方向。这里的方向是相对而言的。如：China faces the Pacific on the east.中国东临太平洋。
The United States faces the Atlantic on the east and the Pacific on the west.美国东临大西洋，西濒太平洋。
