北纬30度主要河流;苏伊士运河,长江北纬40度主要河流;地中海 红海 黑海 里海 密西西比河北纬40度主要城市;落山鸡 旧金山 纽约0度经线主要城市;新加坡 厄瓜多尔 0度经线主要河流;亚马逊河东经120度主要城市;北京东经135度;东京
Main rivers at 30 degrees north latitude; Suez Canal, Yangtze River, main rivers at 40 degrees north latitude; Mediterranean Sea, Red Sea, Black Sea, Caspian Sea, Mississippi River, main cities at 40 degrees north latitude; Los Angeles, San Francisco, New York, main cities at 0 degrees longitude; Singapore, Ecuador, main rivers at 0 degrees longitude; Amazon River, main cities at 120 degrees east longitude; Beijing, 135 degrees east longitude; Tokyo