His shout echoed far away.

He deeply loves his home country.

The police detained him to investigate the incident.

Ten hung the laundry outside to dry.

He worked hard without giving up.

I want to go to Sweden.

Down quarks play an important role in particle physics.

A quark is a type of elementary particle.

The top quark is the heaviest quark in particle physics.

This bacterium is about 1 micrometre in size.