I know a surgeon that will only operate on certain phases of the moon.

Hughes proposes that technological systems pass through certain phases during the system's evolution.

At the same time, he knew that certain phases would go unanswered.

That took about five hours with about another three or four people assisting in certain phases of it.

It thus faithfully reflected a certain phase of 19th-century thought.

A more specific task division also makes it possible for employees to specialize in a certain phase of work.

"They may use the most economic materials or cut certain phases of physical tests," he said.

Now that 1 know how strong you really are, I would like to use helpers in certain phases of your healing.

For a given composition, only certain phases are possible at a given temperature and pressure.

His son gathered that it was part of a report on certain phases of the new atomic energy plant.