His idea is pure armchair theory and cannot be applied to real-world problems.

Christology is a part of Christian theology that studies the nature and role of Jesus Christ.

Among my family, I am the tallest.

He likes to take a walk in the park at dusk.

In set theory, the symmetric difference indicates the difference between two sets.

She has trypophobia, and feels discomfort when she sees things with many holes like beehives or corals.

I am interested in the culture of China.

He is good at reading Chinese text.

I am busy with work during the day.

I work during the daytime.