Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
Explanation: Es simplemente una inferencia que saqué de la definición de REV: http://www.answers.com/topic/rev
To increase the speed of (a motor, for example): revved the engine.
To accelerate or increase: orders to rev up factory output.
To make livelier or more productive: revving ourselves up for the game; efforts to rev the economy.
To operate at an increased speed: heard the motors revving.
To accelerate in quantity or activity.
María Luisa Feely Argentina Local time: 15:59 Specializes in field Native speaker of: Spanish, English PRO pts in category: 4