In this story, all of Tan's actions are absurd and incomprehensible.

When an object is in free fall, its terminal velocity is determined by the balance between gravity and air resistance.

The International System of Units is a standard of measurement widely used around the world.

An orangutan is a very intelligent animal.

I want to go to Bhutan.

Detection dogs are trained to find explosives.

An identity matrix is a square matrix in which all the elements on the diagonal are 1 and all other elements are 0.

He is good at writing short novels.

He works digging out coal.

It's difficult to remember new words.