책 Solutions - 기초 - 문화 6

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

협곡

a trip that has been organized for a particular purpose such as a scientific or military one or for exploration

원정

very unusual, special, or surprising

비범한

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

연못

to prevent someone or something from being damaged or harmed

보호하다

a range of things or people with the same general features but different in some details

다양성