The special theory of relativity is a theory proposed by Einstein.

Maoism is an important element in forming Chinese communism.

It is very dangerous if the battery causes thermal runaway.

He is immersed in the study of Tang-Song phonetics.

He was observing wild animals in the grassland.

The paddy wagon was transporting the criminal to the police station.

He is the founder of this company.

He is raising cows in the pasture.

He gripped the control stick and made the airplane ascend.

The mountain avens is one of the beautiful flowers in the mountains.