the distance of a point east or west of the meridian at Greenwich that is measured in degrees
经度
a structure built out into the water so that people can get on and off boats or ships
码头, docking
a large body of land that is partially surrounded by water but is attached to a larger area of land
半岛, 岬
the most northern or most southern points of the earth that are joined by its axis of rotation
极, 地理极
an area containing still water that is comparatively smaller than a lake, particularly one that is made artificially
池塘, 水池
a lake, either natural or artificial, from which water is supplied to houses
水库, 储水池
the expansive flat Arctic regions, of North America, Asia, and Europe, in which no trees grow and the soil is always frozen
冻土地带
(of natural forces such as wind, water, or other environmental factors) to gradually wear away or diminish the surface of a material
侵蚀, 侵削