roil /rɔɪl/ (roiling,roiled,roils)

• 1.  

  V-I（不及物动词） 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（及物动词） 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。