Flick Of The Switch

Let's hope they're wise enough not to be fooled by a machine that claims to determine truthfulness at the flick of a switch.

我们希望他们足够聪明，不要被一台声称只要按一下开关就能确定真实性的机器愚弄。

That was in the days before electricity was available at the flick of a switch.

那是在过去，还没有到开关一响就有电的时代。

《牛津词典》

Processing plants can go back and forth between ethanol and crystallised sugar at the flick of a switch, depending on prices.

受价格影响，只要轻弹开关，加工厂就可以在乙醇和结晶糖之间转换。