Once trained, they could be used for other things too.

To them, once trained, would fall the newly cleared land.

Once trained, these teams then work under the supervision of more experienced staff.

I think some of the articles that focus on legal issues could use a formally trained once over.

Once trained, though, many leave for better paid jobs in wealthier nations.

Once trained, cheaters can read the cards from across the table.

The muscles, once trained, must be forgotten, as if they were responding to natural forces.

Once trained, the individuals will instruct others in their departments.

Once fully trained, a police dog is a very valuable commodity - worth at least £5,000.

But once trained as a warrior, one would find only agony in taking a manual position.