campaigns是什么意思？

Those are a few of the traits of successful science crowdfunding efforts that emerge from a recent study that examined nearly 400 campaigns.

To determine what separates science crowdfunding triumphs from failures, a team led by science communications scholar Mike Schafer of the University of Zurich examined the content of the webpages for 371 recent campaigns.

It runs sales promotion campaigns.

Environmental campaigns that tell us how many people drive SUVs unwittingly (不经意地) imply that this behaviour is widespread and thus permissible.