What purpose did they have in keeping the Hatchlings' vocal ability a secret?

These particles can keep their ability to be expressed while not always appearing in a descending generation.

Keep the faith in yourself and your ability to do all things.

Keeping the patient's ability to talk, eat, and breathe as normal as possible.

Though many cells keep their ability to divide, this is not true for all.

A partial laryngectomy helps keep the patient's ability to talk.

Speech therapy can help you keep your ability to talk after problems with speech begin.

Therefore we want to keep our ability to respond flexible but quick.

The seeds keep their ability to germinate for many years.

She is very hyperactive and has kept her cat-like ability to scale walls with ease.