An astronomical unit represents the average distance from the Earth to the Sun.

This product has a very small assembly unit.

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

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

His speech has persuasiveness.

The extent of his vocabulary strength indicates that he is an avid reader.

His ability to concentrate is astonishing.

Her strong gaze gave a strong impression even before she spoke.

This tin toy is old, but it's still beautiful.

His ability to judge is very excellent.