My friend came from American Samoa.

He is studying the history of African Americans.

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.

He is an expert in international law.

His work skillfully uses synecdoche.

He is showing deep respect for the Buddha, the Dharma, and the Sangha.

I live in Suhou Prefecture.