Extra police were called in to quell the disturbances.

已调集了增援警力来平定骚乱。

《牛津词典》

Large-scale disturbances in one locale also have the potential to alter the genetic structure of populations in neighboring areas, even if those areas have pristine habitats.

一个地区的大规模骚乱也有可能改变邻近地区人口的遗传结构，即使这些地区有原始的栖息地。

youdao

Miss Rottenmeier found it wiser now to stay in the study to prevent further disturbances.

罗特麦耶小姐也坐到房间里，心想，这样应该不会出什么类似的乱子了。

youdao

Ten police officers were injured in disturbances after a protest against restrictions on flying the union flag at Belfast City Hall.

BBC: Belfast man in court on rioting charge

On Thursday, Prime Minister David Cameron addressed the issue in the Commons, ordering a review of social media in disturbances to learn lessons from the riots.

BBC: England riots: Dangers behind false rumours

Nine other men have already admitted taking part in the disturbances on 9 August, the jury was told.

BBC: Eight on trial over petrol bomb attack in Nottingham