Graphically, it is visualized as a circle with (possibly) a small icon inside.
它看起来是一个圆(可能)内部有一个小图标。
Notice that there will be a small arrowhead on this icon.
注意到图标上有个小箭头(xxxx)。
Icon: a small pictorial representation of an object or function in a computer display.
图像(图标)：在电脑显示器上，代替一个物体划功能的细小图形。
Icon: a small pictorial representation of an object or function in a computer display.
图像(图标)：在电脑显示器上，代替一个物体划功能的细小图形。
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