Our computer network is protected by a powerful firewall.

He moved the object using the force.

He moved the object using the force.

Kokin Wakashū is the first imperial anthology of Japanese waka poetry.

Foucault's pendulum is used to prove the rotation of the earth.

Experiments with the Foucault pendulum help to understand important parts of physics.

The phi value is too high.

He is writing a paper on coding theory.

A matrimonial quarrel is one of the factors that disturb the peace of the home.

Christopher is a Christian saint, and there is a legend that he carried travelers across the river on his back.