turbulent Lewis number

例句：

1. 1. The river was so turbulent that it was hard to navigate the boat.
   那条河太湍急了，很难驾驶船只。
2. 2. The storm caused a lot of turbulence in the shipping industry.
   暴风雨给航运业带来了很多混乱。
3. 3. The turbulent waters made it difficult for the swimmer to keep his head above water.
   湍急的水流使游泳者难以保持头部在水面以上。