gray iron bar 铸铁型材
Double-click the gray bar for the group to which you assigned the documents.
双击文档被分配到的那个内容组的灰色条形图标。
The gray bar represents the volume the music would be at if the volume slider were set to maximum.
灰色栏代表音乐将是在如果音量滑块被设置为最大的卷。
The gray bar is moving, the green bar is moving (and is a decent size), but you still can't hear anything.
灰色的列移动，移动绿色列 （而是正常的大小），但您仍然无法听到任何。
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