This dragon bone is believed to be from an ancient creature.

The ichthyosaur is an ancient marine reptile, and its name means 'dragon like a fish'.

His laryngeal prominence is clearly visible.

An alpha particle is the same as the nucleus of a helium atom.

He was amazed at the power of the cataract when he saw it.

This lake's temperature is kept uniform by convection.

He was detained for the crime of illegal entry.

He was detained for the crime of illegal entry.

We need to measure the flow rate of this pipe.

I was born and raised in Kiryu.