Many groups world wide are working on a universal flu vaccine that doesn't require changing each year.

At this same time, her garments would be inspected to see if they required changing.

Performance improvements will probably require changing the way software is written.

There is also train service, but it would require changing in Chicago and take longer.

The solution requires changing how the entire river is managed.

It also will require changing some of our living habits.

And it wouldn't even require changing my real name that much.

She offered a suggestion that required changing the entire structure of his presentation.

Posting a worker to another member state may require changing their employment contract.

But an effective long-term solution requires changing the way all teachers are trained and licensed.