a low area of land between mountains or hills, often with a river flowing through it

山谷, 低谷
a large, dry area of land with very few plants, typically one covered with sand

沙漠, 荒漠
a very tall and large natural structure that looks like a huge hill with a pointed top that is often covered in snow

山脉, 高山
a naturally raised area of land that is higher than the land around it, often with a round shape

山丘, 小山
a large, open, and grass-covered area

草原, 草地
a vast area of flat land

平原, 平坦地带
the salt water that covers most of the earth’s surface and surrounds its continents and islands

海, 海洋
an area of land that is curved and partly encloses a part of the sea

海湾, 湾区
the area of land where the land meets a body of water such as an ocean, sea, lake, or river

海岸, 滨
a natural and continuous stream of water flowing on the land to the sea, a lake, or another river

河流, 河
a hole or chamber formed underground naturally by rocks gradually breaking down over time

洞穴, caves
a mountain with an opening on its top, from which melted rock and ash can be pushed out into the air

火山, volcán
IELTS学术词汇 (分数5) |
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