His company was a short-lived regime.

I am attending cooking classes to learn the technique of filleting fish.

They are always together like the Three Musketeers at school.

When learning Japanese grammar, understanding the tri-grade conjugation is important.

This shape is a parallelogram.

He is working round the clock.

My four treasures of the study are a fountain pen, a pencil, an eraser, and a ruler.

He is doing squats to train his quadriceps femoris muscle.

Please calculate the quartiles of this data set.

This regular tetrahedron is composed of equilateral triangles on all sides.