Give me the keys to the Mercedes. I need some fresh air.

给我梅赛德斯的车钥匙，我需要一些新鲜空气。

youdao

Collectoutlet keys from Security Dept, turn on lights, air-conditioning and music in the restaurant.

从保安部领取钥匙，开启餐厅及所有的灯，空调，及背景音乐。

youdao

You can rent an aircraft and take photographs of the beautiful Keys from the air.

VOA: special.2010.03.22

Since they are digital, the keys can be distributed over the air or revoked remotely via a signal sent to the phone.

FORBES: Smartphone 'Digital Keys' Coming To Campuses, Offices, Homes

There are still hundreds of millions of Chinese who want the keys to their first car, their first air-conditioner, even a fridge.

BBC: Beijing smog: When growth trumps life in China

This could certainly go a ways toward democratizing the creation of 3D models -- though CAD knowledge and an artistic streak are still keys if you want to make something out of thin air.

ENGADGET: The Engadget Interview: Bre Pettis talks MakerBot's Digitizer Desktop 3D Scanner