He learned how to operate a cannon.

In Japan, the metric system is commonly used.

A gun salute was fired at the royal wedding.

He ran desperately to preserve his life.

He solved the problem using deductive reasoning.

Observing etiquette is important for smooth social life.

This theory subsumes other theories.

This theory subsumes other theories.

He passed the bar examination.

This ancient tsūhō is part of my collection.