He is good at hunting using a crossbow.

He accidentally rode his bicycle onto the curb.

He used stepping stones to cross the river.

He tripped over the pebble at his feet.

He picked up a stone and threw it.

Harry was searching for the Philosopher's Stone.

My father is an excellent doctor.

His strong will led him to success.

His intention was clear.

A neutron is part of an atomic nucleus.