n. left arrow
按左箭头键移回左侧菜单并上移至地址本。
Press the leave arrow to move back to the leave menu and move up to address book.
旁边鼠标的滚轮，你也可以使用左箭头和右箭头键移动通过堆栈窗口。
Beside mouse's scroll wheel, you can also use the Left Arrow and Right Arrow keys to move through the stack of Windows.
当焦点在左滑块上时，箭头键会按1个间隔向左或向右移动缩放窗口的起始边界。
When the left slider has the focus, the arrow keys will move the starting boundary of the zoom window by 1 interval left or right.
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