adj．搅动的，激荡的：指液体因受到外力而产生的剧烈搅动或波动。
v．搅动，使激荡：使液体剧烈搅动或波动。
roil /rɔɪl/ [ roiling roiled roils ]
不及物动词 If water roils, it is rough and disturbed. 激荡; 翻腾
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。
及物动词 Something that roils a state or situation makes it disturbed and confused. 扰乱; 使混乱
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。
Apparently "Like a Roiling Stone" suddenly flowed from his pen.
显然，“Like a Roiling Stone”是他突发奇想写出来的。
Greece's debt crisis also is roiling Wall Street.
希腊的债务危机也影响到了华尔街。
There's no sign of ice, just a river roiling with silt-laden melt.
这里看不到冰雪的迹象，只有融化的雪水裹挟着泥沙顺流而下。
you see the swaying ropes, the roiling water.
VOA : special.2009.09.02
"Every time Americans debate the problem of states' rights, the relationship of federal power to state power -- which we are indeed having a roiling debate again -- and every time we debate not only race relations, but the very idea of what it means to be an American, multi-racial,greatly diverse society, we are debating the direct legacies of the Civil War."
VOA : special.2011.04.09
So they're swamped by these roiling waters.
所以埃及士兵被翻滚的大浪所淹没。
旧约导论课程节选 : 耶鲁公开课
The roiling river before us runs wide and high, the colour of coffee rich with heavy cream.
"Jump out now, " Ashley urged, as the raft maneuvered effortlessly through the roiling river.
WSJ: Merrill Markoe on a Dark and Lonely Road Trip | Traveler's Tale
By weaving science lessons into roiling adventure tales, Verne and Hetzel strove to circumvent those strictures.