riot gas的意思|示意

Riot police used tear gas to break up the demonstration.

防暴警察使用了催泪瓦斯驱散示威游行。

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。

A protester with gas mask and camera participates in a standoff with a line of riot police on Bay Street during the G8 and G20 Summits Saturday June 26 2010 in Toronto Canada.

带有防毒面具和相机的抗议者参与了一个有关于湾街防暴警察在八国集团首脑会议和20国集团的对峙线，星期六，2010年6月26日在加拿大多伦多。