A system similar to car repair procedures can be used by doctors for complex operations.

The massive and complex operation took two months to complete but it was successful far beyond all expectations.

Consideration of a measure by the full House can be a simple or very complex operation.

It seems to be a large and complex operation, only part of which concerns us.

This is an extraordinarily complex operation, and scientists are still a long way from understanding everything about it.

A recognition of his ability to manage a complex technical operation.

Logic systems are quite easy to design, and can handle very complex operations.

For example, moving parts of the image (within slice) do not require complex operations.

This is, without doubt, a huge and very complex humanitarian operation.

From beginning to end it is a complex operation which may take several hours to complete.