这导致了旋钮与按键的数量激增，有不少还装在了日趋凌乱的方向盘上。

This has caused a proliferation of knobs and buttons, many of them on an increasingly cluttered steering wheel.

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尝试相机所有不同的功能，你需要做到的是了解相机上的所有按键、菜单及旋钮。

Try this on all the different features on your camera. What you want achieve is an understanding of all the buttons, menus and knobs on the camera.

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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.

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