naturally occurring   (自然発生)

Astatine is the rarest naturally occurring element.

Carbon has two stable, naturally occurring isotopes.

Bohrium has no stable or naturally occurring isotopes.

naturally aspirated   (自然に吸引)

It is powered by a naturally aspirated 2.5-litre 168 hp engine.

The engine was a naturally aspirated, water cooled, 792 cc flat-two.

The code for the naturally aspirated model changed from DL41 to DL42.

occurs naturally

It occurs naturally on the Three Kings Islands.

Diamantane occurs naturally in crude petroleum.

It occurs naturally in Earth's atmosphere as a trace gas.

occur naturally

Of these 118 elements, 94 occur naturally on Earth.

Ostriches are wild birds that occur naturally in Africa.

Livermorium does not occur naturally at all.

not naturally

The town surrounds a lake which, however, was not naturally formed.

For example, it is useful in relativity where space-time cannot naturally be taken as extrinsic (what would be "outside" of the universe?).

It is often seen as the science behind flow manufacturing for discrete manufacturers, whose products do not naturally flow across the manufacturing processes.

grows naturally

"Lithocarpus havilandii" grows naturally in Borneo and Sulawesi.

"Castanopsis indica" grows naturally in Nepal, Bhutan to Taiwan.

"Lithocarpus lampadarius" grows naturally in Peninsular Malaysia and Borneo.

found naturally

Adhesives may be found naturally or produced synthetically.

It is found naturally as a fermentation product of "Streptomyces fradiae".

The retrochalcones are found naturally where they are derivatives of flavones.