The unchecked development means there is little ability to consider China's needs as a whole, or to prevent duplication and waste.

The supplier has their own rules in place to prevent unauthorized duplication.

But there is still no way to prevent duplication.

Lawmakers wanted to prevent duplication of the new Medicare benefit.

And to prevent duplication, museums are required to destroy them when the exhibitions close.

But sellers want to use some mechanical or electronic scheme to prevent duplication.

Nor, he said, was it company policy to compare tests and popular commercial curriculums in an effort to prevent duplication.

This would help prevent bureaucratic red tape and duplication of effort.

We must prevent duplication of effort by merging the agencies.

To prevent duplication within a state, prefixes go up.