They are caused by a complex mixture of hormones and the unconscious mind.

Clearly there is a complex mixture of physiology and psychology in this situation.

He was filled with a complex mixture of emotions.

Psychologically, we're all a complex mixture of hopes and fears.

Rosie herself felt a complex mixture of apprehension and anticipation.

Most likely, what's killing off our frogs is a complex mixture of global environmental changes.

Overall, the Chinese industrial system contains a complex mixture of relationships.

The technique has been used for the characterization of very complex mixtures.

Through extensive research and development, a complex mixture of concrete is produced.

But there was something else, some complex mixture of yearning and fear, so unfamiliar it caused her to step back.