It is the most complex and difficult part of the network to complete.

With some case designs this is the most complex part of the whole fitting process.

The cochlea is by far the most complex part of the ear.

Obviously it is hard for a young man to inhabit this complex part.

The central executive is said to be the most important and complex part of Working Memory.

The most complex part of each simulator is the computer systems.

Do not start to automate the most complex part of your system first.

That, I think, is the most complex part of climate change.

It was the single largest, and most complex, part of the reterraforming project.

It can be an important or complex part of a competition case under Article 102.