Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.

I can't solve this problem because there are too many numbers.

The budget for this project has already exceeded the set limit.

His imagination is infinite.

I can't imagine how deep his suffering is.

This beautiful scenery is beyond imagination.

In this experiment, we will use the International System of Units.

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

An imaginary unit is an important concept in mathematics.