自然 + 的 + Noun
自然 (zìrán) is a Chinese adjective and noun meaning "natural" or "nature." It can describe something that occurs without artificial intervention, and as a noun it refers to the natural world. It also functions as an adverb meaning "naturally" or "of course."
这里的风景很自然,没有被破坏过。
Zhèlǐ de fēngjǐng hěn zìrán, méiyǒu bèi pòhuài guò.
The scenery here is very natural and hasn't been damaged.
你拍照的时候表情自然一点,别太紧张。
Nǐ pāizhào de shíhou biǎoqíng zìrán yìdiǎn, bié tài jǐnzhāng.
When you take photos, make your expression more natural; don't be too nervous.
他的演技很自然,一点也不做作。
Tā de yǎnjì hěn zìrán, yìdiǎn yě bú zuòzuo.
His acting is very natural, not at all affected.