This system is very complex.

He continues to chase a dream like chasing the moon in the sea.

He is making a futile effort like trying to scoop up the moon from the bottom of the sea.

Paleoecology is a field of study that investigates the relationship between past organisms and their environment.

He is an expert in paleoecology, pouring his passion into studying past ecosystems.

Lichens can survive even in harsh environments.

Birds of prey capture their prey with their sharp vision and powerful claws.

Ko-rui shochu is a type of shochu produced by fractional distillation.

I like shochu produced by simple distillation.

Mammals can maintain a constant body temperature.