He is an amazing polyglot who can speak five languages fluently.

Polyarchy refers to a political system where many people share power.

Myriapods belong to the same Arthropoda phylum as insects.

He never misses his multifidus muscle training every day.

He faced many difficulties before he succeeded, but as they say, the road to happiness is strewn with setbacks.

Watashi lives in Japan.

This species of bird has a polygynous breeding pattern.

She has polycystic ovary syndrome.

General relativity is a theory of physics proposed by Einstein.

Special relativity is one of the fundamental theories of physics.