This could be highly complex and expensive, other diplomats said.

Competitiveness in the field is a highly complex, technical issue.

Such arrangements are highly complex, with thousands of details to be worked out.

Social psychology is clearly another large and highly complex topic.

Another problem has been that information systems are highly complex, and provide uncertain return on investment.

At the other extreme are the experts who make highly complex claims.

Since 1945, rules have become highly complex in order to minimize dangerous play.

Furthermore, they have carried out serious work on a highly complex subject.

In a federal state, it may be a highly complex matter.

I do not believe it is highly complex to deal with the cloning issue now.