This image is altogether a more complicated piece of work.

A prodigy, he could play complicated pieces on a single string.

He looked like a man trying to do a complicated piece of mental arithmetic.

No one else could understand such complicated pieces of machinery.

It is a complicated piece of equipment and takes some time to understand and use.

Prices for the more complicated pieces go up to $400.

I found the slow process of learning big, complicated pieces satisfying.

They have certainly carried out a complicated and difficult piece of work.

It was the first technically complicated piece of scientific writing to appear in the magazine.

Quick, complicated pieces were usually rushed beyond their natural boundaries.