nature
everything that exists or happens on the earth, excluding things that humans make or control
性质
[名词]
sea
the salt water that covers most of the earth’s surface and surrounds its continents and islands
海
[名词]
mountain
a very tall and large natural structure that looks like a huge hill with a pointed top that is often covered in snow
山
[名词]
river
a natural and continuous stream of water flowing on the land to the sea, a lake, or another river
河
[名词]
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