英语释义
1. a movable item used to mark a position: such as
2. a transparent slide with a line attached to a slide rule
3. a visual cue (such as a flashing vertical line) on a video display that indicates position (as for data entry)
4. a mark on a computer screen that shows the place where information is being entered or read
5. a symbol (as an arrow or blinking line) on a computer screen that shows where the user is working