在Live主页，点击添加联系人，选择要添加联系人的网络，点击向右的箭头。
On the Live homepage, click add People. Select the network from which to add your contacts, and click the right arrow.
他可以使用工具栏中的向左或向右箭头来访问演示的不同页面。
He can use the the left and right arrows in the toolbar to navigate through the pages of the presentation.
如果单击箭头，则图像就会向左或向右移动，并被一组新的图像取代。
If you click the arrows, the images shift to the left or right and are replaced with a new set of images.
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