Because his sense of pain is dull, he doesn't notice right away when he gets injured.

The denuclearization of North Korea is an important issue for world peace.

A round angle is 360 degrees.

This figure can be solved using the double-angle formula.

We hold meetings every other month.

He succeeded in unlocking the door.

He succeeded in unlocking the door.

He is doing a special exercise to strengthen his subscapularis muscle.

He boxed his younger brother's ears for his mischief.

In physics, the study of the 'nucleus' at the center of an atom is important.