• Sea level /'si:,levl/ (n): mực nước biển (the average height of the sea, used as the basis for measuring the height of all places on land).

Ex: The top of Mount Everest is 8,848 m above sea level.

• Subtropical /ˌsʌbˈtrɒpɪkl/ (adj): cận nhiệt đới (in or connected with regions that are near tropical parts of the world).

Ex: Subtropical regions are cooler than equatorial regions.

• Territory /'teritəri/ (n): lãnh thổ (and that is under the control of a particular country or political leader).

Ex: They have refused to allow UN troops to be stationed in their territory.

• Terrain /təˈreɪn/ (n): địa hình (used to refer to an area of land when you are mentioning its natural features, for example, if it is rough, flat, etc.).

Ex: They walked for miles across steep and inhospitable terrain.

• Region /ˈriːdʒən/ (n): vùng/ miền (a large area of land, usually without exact limits or borders).

Ex: This is one of the most densely populated regions of North America.

• Antarctica /ænˈtɑːktɪkə/ (n): châu Nam Cực (the continent around the South Pole).

Ex: Antarctica is the fifth-largest continent and nearly twice the size of Australia.

• Equator /ɪˈkweɪtə(r)/ (n): xích đạo (an imaginary line around the earth at an equal distance from the North and South Poles).

Ex: The island is twenty degrees south of the equator.

• Plateau (n): cao nguyên (an area of flat land that is higher than the land around it).

Ex: The summit is a windswept plateau of scattered rocks.

• Basin /ˈbeɪsn/ (n): lưu vực (an area of land around a large river with streams running down into it).

Ex: Amazon Basin is the largest in the world.

• Creek /kriːk/ (n): nhánh sông (a narrow area of water where the sea flows into the land).

Ex: They drove to the little creek where they kept their fishing boat.

• Hill (n): đồi (an area of land that is higher than the land around it, but not as high as a mountain).

Ex: The house is built on the side of a hill overlooking the river.