And because the trimmer can be turned off and on with the flip of a switch, it is also more convenient than gas-fueled models: There's no temptation to idle it.

而且由于这款剪草机只需轻按按钮就能开关，因此它比汽油动力的型号用起来也更方便：你有什么理由拒绝它呢？

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The electric station is controlled with the help of the mnemocircuit. The computer can be used to switch on and off the entire equipment on the electric station.

借助于简略电路对发电站进行控制。计算机可开关发电站的所有设备。

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With AIX, the iptrace is a background daemon, so you must explicitly start and stop the tool to switch the process on and off. For example, to start, type.

对于AIX, iptrace是一个后台守护进程，因此您必须启动和停止该工具，以便对进程状态进行切换。

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It's a bit more-- to continue with the metaphor of the on-of switch-- as though not only is the switch turned to off, there's a lock on the switch.

要继续用开关的比喻-,就有点奇怪了-,似乎开关的上面，还有一个锁定装置。

耶鲁公开课 - 死亡课程节选

"You run through a field and the paraglider wing catches the wind, it fills with air, blows you off the ground, you switch on the motor and off you go, you're flying, " he said.

CNN: Flying 'Parajet' takes off

Every time you turn a light switch on or a faucet off you interact with the market.

FORBES: Economists Aren't As Clever As They Think They Are

If it all sounds too much, Mrs Kramlich points out that living with media art is really no different from living with fixed-image art. (The couple have works by Andy Warhol and Joseph Beuys in their mock-Tudor San Francisco home.) The difference, she adds with an eye to California's electricity troubles, is that you have an on-off switch and when the images vanish, the house is an artwork of its own.

ECONOMIST: Showing video art: The glasshouse effect | The