A blip is a small spot of light, sometimes occurring with a short, high-pitched sound, which flashes on and off regularly on a piece of equipment such as a radar screen.
N-COUNT
（直线上的）转折点，跳点
A blip in a straight line, such as the line on a graph, is a point at which the line suddenly makes a sharp change of direction before returning to its original direction.
N-COUNT
暂时的突变；突然的中断
A blip in a situation is a sudden but temporary change or interruption in it.