a valley that is deep and has very steep sides, through which a river is flowing usually

峡谷, 幽谷

a mound or ridge of sand that is typically formed by the wind, often found in deserts, coastal areas, or other regions with significant wind activity

沙丘

an area containing still water that is comparatively smaller than a lake, particularly one that is made artificially

池塘, 水池

a large body of land that is partially surrounded by water but is attached to a larger area of land

半岛, 岬

the distance of a point east or west of the meridian at Greenwich that is measured in degrees

经度

each of the two parallel and imaginary lines around the earth that is 23°26ʹ south or north of the equator

回归线, 回归线(假想线)

a hypothetical line around the Earth that divides it into Northern and Southern hemispheres

赤道

an imaginary circle around 66.5 degrees south of the equator, marking the southernmost point where the sun stays above or below the horizon for 24 hours during the respective solstices

南极圈, 南极纬线

a collection of maps, charts, and geographical information typically organized by region or topic

地图册, 地图收集

