That has caused some alarm because China was acting as the engine of global growth.

ECONOMIST: Buttonwood

We want to help more people start new schools, acting as an engine for social mobility in every region of the country.

BBC: NEWS | UK | UK Politics | In full: George Osborne speech

Me completely reorganizes your home screen by acting as a search engine and Siri-like virtual assistant.

FORBES: Everything.Me Wants To Be The Google For Mobile, Hits 150K Downloads

Other recent indicators have suggested that manufacturing is stalling after acting as a growth engine for much of the recovery.

WSJ: Jobless Claims Increase