He is learning Ancient Greek language.

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

The history of the Empire of Japan is very interesting.

Old Church Slavonic is the oldest recorded language of the Slavic group.

Old Church Slavonic is the first language written by the Slavs.

Special relativity is one of the fundamental theories of physics.

Electroporation is a biotechnology technique that creates temporary holes in the cell membrane to incorporate substances into the cell.

Variational method is a branch of mathematics used to find the minimum and maximum values of functions.

Linear programming is a part of operations research and is used to find the optimal solution.

He is undergoing training in cardiopulmonary resuscitation.