Digital zoom with the mouse scroll wheel, and drag to scroll the recording window.

通过鼠标的滑动可以进行数码变焦，也可以拖拉滚动条来控制录制的窗口。

youdao

Mice with a scroll wheel as a middle mouse button are fairly popular, so support is being added.

用一个滚动轮作为鼠标中键的鼠标非常流行，所以增加了对它的支持。

youdao

Also keep in mind you can hold the Space Bar or the Scroll Wheel button if you have one on your mouse to enable the Hand Tool as well.

同时也要记住，如果你的鼠标有滚轮，按住滚轮或者空格键都可以使用抓手工具。

youdao

While the Mobile Mouse has just the Start key and a scroll wheel, though, the bigger Comfort Mouse takes things a step further: the button there doubles as a capacitive surface you can swipe to toggle through open programs in Windows 8.

ENGADGET

If you really want to cut through huge blocks of text, you're still better off using the scroll wheel on your mouse.

ENGADGET: Hands-on with Tobii REX, a peripheral that brings eye-tracking to any Windows 8 PC (video)

In our hands-on demo, we stared at a world map, and then used the scroll wheel on a mouse to zoom in on that particular country.

ENGADGET: Hands-on with Tobii REX, a peripheral that brings eye-tracking to any Windows 8 PC (video)