Riot police hurled tear gas canisters and smoke bombs into the crowd.

防暴警察朝人群猛掷催泪瓦斯罐和烟幕弹。

《柯林斯英汉双解大词典》

One night in April, as the capital's air defences blazed wildly into the night sky, the flying Tigers dropped bombs on a gas installation and an air force base.

四月的一个夜晚，首都的防空炮火燃亮了夜空，插翅猛虎向一座加油站和一座空军基地投下炸弹。

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He said the police lacked ladders, flash bombs, and gas masks when they approached and tried to pry open the bus. "What was going through your mind? You had time to study the bus," he said.

他说当警方接近并且试图进入车内的时候，他们缺少梯子，闪光弹，防毒面罩。

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Both explosions in Barcelona were caused by bombs made from gas canisters.

CNN: General dies from ETA blast injuries

Monday's account offered the first Algerian government narrative of the four-day standoff, from the moment of the attempted bus hijacking to the moment when the attackers began to prepare to explode bombs across the massive gas plant that sprawled over 5 square kilometers ( 2 square miles).

NPR: Inside Job, 2 Canadian Militants In Algeria Siege

President Thein Sein's office said in a statement that police had used water cannon, tear gas and smoke bombs to disperse the crowds.

BBC: Burmese police break up copper mine protest