roil /rɔɪl/ ( roiling, roiled, roils )

• 1. 

  V-I If water roils, it is rough and disturbed. 激荡; 翻腾 [美国英语]

  例：

  The water roiled to his left as he climbed carefully at the edge of the waterfall.

  当他在瀑布边缘小心攀爬时，水飞溅到他左边。

• 2. 

  V-T Something that roils a state or situation makes it disturbed and confused. 扰乱; 使混乱

  例：

  Times of national turmoil generally roil a country's financial markets.

  国家动荡不安的时候，通常引起金融市场混乱。