He is hiding a secret.

He is an expert in nuclear physics.

My favorite fighting game is Street Fighter.

He distinguished himself in that project.

She cried her eyes out when she failed the exam.

He never misses a day of martial arts training.

The amygdala is a part of the brain that controls our emotions.

Trigonometry is a branch of mathematics that studies the relationship between angles and triangles.

He read the small print using a magnifying glass.

He solved the problem by hook or by crook.