然而这些方法的任何一种都不如老式的旋钮和按键好用，而且它们操作起来也比较费时，还会令司机分心。
None of the options works as well or is as easy to use as old-fashioned knobs and switches, and they can be more time-consuming and distracting to operate.
凸轮元件把一个温度控制旋钮可操作地连接于恒温器。
The CAM member operably connects a temperature control knob to the thermostat.
旋钮和触摸按键操作。
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