He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

Well then, I'm off.

A pangolin is a very rare animal.

The Kapitan of this ship is a very experienced person.

The long-spined sea urchin, Diadema setosum, is a beautiful creature that can be found at the bottom of the sea.

In Sanskrit phonology, retroflex sounds play an important role.

A back vowel is a sound where the back of the tongue approaches the palate.

Back vowels are vowels that are pronounced using the back of the tongue.

A coronal is a sound that is pronounced using the tip or the upper part of the tongue.

Retroflex sounds are difficult to pronounce.