twostream instability

例句：

1. 1. The two-stream instability of the river has been a concern for many years.
   多年来，河流的双流不稳定一直是人们关注的焦点。
2. 2. The two-stream instability is caused by the difference in temperature and salinity between the upper and lower layers of the water column.
   双流不稳定是由水柱上下层温度和盐度差异引起的。
3. 3. In order to mitigate the two-stream instability, scientists are exploring various methods to reduce the impact of wind on theocean surface.
   为了减轻双流不稳定的影响，科学家们正在探索各种方法来减少风对海洋表面的影响。