TW2002 takes a large investment of time compared to most door games.

These problems can be overcome by a small investment of time and resources.

It does not pay the audience back for its investment of time.

It will often require investment of time and money before positive effects can be seen.

But that investment of time and money was not enough to persuade them to stay.

There was a huge investment of time, effort and money.

Only after the initial investment of time or money may participants hope to see a return from their labor.

Training a dog to work with a specific blind person is a major investment of time and effort.

"It was a very big investment of time and energy," he says.

Action may call for an investment of time, but material costs are often low.