Mexican wave
noun
- an effect resembling a moving wave produced by successive sections of the crowd in a stadium standing up, raising their arms, lowering them, and sitting down again墨西哥波浪（体育馆人群一批批连续站立, 抬臂, 放下, 再坐下的类似起伏波浪的效果）, 人浪。
词源
so named because of the repeated practice of this movement at the 1986 soccer World Cup finals in Mexico City.