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自然界
shizenkai
natural world
自然界には驚くべき多様性がある。
The natural world has astonishing diversity.
general
The natural world, encompassing all living organisms and natural phenomena not created by humans.
自然界のバランスを保つことは重要だ。
It's important to maintain the balance of the natural world.
Refers to ecosystems, wildlife, and natural processes.
Related Phrases
Pro Tip
Usage in Ecology
In ecological discussions, 自然界 often contrasts with human-made environments.
Gold Rule
Avoid Overgeneralization
Do not use 自然界 to refer to human-made or artificial things.
Word Origin
Composed of 自然 (shizen, 'nature') and 界 (kai, 'world' or 'realm').
Usage Notes
Often used in ecological, scientific, or philosophical contexts to refer to the non-human world.
Word Breakdown
自然
nature
root界
world/realm
suffix和英辞典