1580s, of uncertain origin, probably from Middle French rouiller "to rust, make muddy," from Old French roil "mud, muck, rust" (12c.), from Vulgar Latin *robicula, from Latin robigo "rust" (see robust). An earlier borrowing of the French verb is Middle English roil "to roam or rove about" (early 14c.). Related: Roiled; roiling.
实用例句
1. Some of her habits are off - putting but don't let them roil you.
她的一些习惯让人恶心,但最好别烦你.
来自《简明英汉词典》
2. Times of national turmoil generally roil a country's financial markets.
在国家动荡不安的时代，该国的金融市场一般都会出现混乱。
来自辞典例句
3. The machine is made from steel. It's vibration treated roil to reduce internal stress.
