Over time, they evolved into very complicated structures with many lines of defense.

Unless it has a complicated molecular structure, I should have an answer for you in two days.

The deal is a complicated structure of stock, real estate and employment transactions.

Some bifurcations can lead to very complicated structures in phase space.

We are talking about a complicated economic structure that is developing quickly and, I think, in the right direction.

It's a very complicated structure, with money coming in over 15 or 20 years or more.

But the merger's complicated structure was criticized by some analysts.

But most investors agree there is little upside to Shell's complicated structure.

"The building is a very complicated structure," he said.

To resolve the disputes over political control, the new company would have a complicated structure.