a valley that is deep and has very steep sides, through which a river is flowing usually
峡谷, 深谷
他们在峡谷底部附近搭起了营地。
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, 沙堆
植被覆盖的沙丘，长满了草和植物，为沿海地区提供了防止侵蚀的稳定性。
a piece of land covered in grass and sometimes wild flowers, often used for hay
草地, 牧场
受保护的草地支持许多昆虫和鸟类的物种。
an area of land that is covered with water or is always very wet
沼泽, 湿地
当地民间传说常常讲述潜伏在沼泽深处的神秘生物的故事，为其增添了魅力和神秘感。
an area containing still water that is comparatively smaller than a lake, particularly one that is made artificially
池塘, 水池
冬天，池塘结冰了，人们可以在其表面上享受滑冰和其他活动。
an area of land that is flat and higher than the land surrounding it
高原, 台地
青藏高原，常被称为“世界屋脊”，是世界上最高、最大的高原。
a large body of land that is partially surrounded by water but is attached to a larger area of land
半岛, 几乎岛
阿拉伯半岛是一个广阔的沙漠地区，富含石油和文化历史，濒临多个水域，包括红海和波斯湾。
a ridge of rock or a line of sand near the surface of a body of water
礁, 珊瑚礁
地图显示海岸线沿线有一个危险的礁石。
the outer areas or parts of a city or town
郊区, 市郊
在高峰时段从郊区通勤到市中心可能具有挑战性，因为交通拥堵通常会显著减慢出行时间。
a small curved area of land that partly encloses a specific part of the sea
小海湾, 湾
环绕着小海湾的悬崖提供了海洋上日落的壮丽景色。
the distance of a point east or west of the meridian at Greenwich that is measured in degrees
经度, 子午线
时区是根据地球上的经度线确定的。
an imaginary horizontal circle around the Earth parallel to the equator, used to measure north-south position
纬度, 纬线
纬度坐标与经度配对以指定位置。
a hazardous or difficult situation that is very hard to get out of
流沙, 陷阱
公司的财务问题感觉就像流沙，将他们更深地拖入债务。
either of the two imaginary lines around the Earth located about 23° north and south of the equator
回归线, 回归线
由于全球天气模式，许多沙漠沿着回归线被发现。
a hypothetical line around the Earth that divides it into Northern and Southern hemispheres
赤道, 赤道线
赤道在全球气候模式中扮演着关键角色。
a large collection of islands or the sea surrounding them
群岛, 列岛
旅行者经常探索希腊群岛，因为它的美丽岛屿。
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, 南极圈
南极圈是研究地球轴向倾斜及其对日照时间影响的关键地理标志。
