By Imogen Foulkes, Geneva

媒體英語會帶大家一起學習BBC撰稿人在報道世界大事時常用到的單詞和短語。

Background: 據瑞士官方報道,一組持槍歹徒襲擊了巴塞爾城市里的一所賭場，搶劫了幾十萬英鎊。 這宗搶劫案發生在星期天凌晨，當時這所被稱為歐洲小拉斯韋加斯的賭場正在對外營業，場內有很多客人和工作人員。

Swiss police are describing the raid as highly professional and worryingly violent.

Ten masked men, armed with machine guns and pistols, stormed the casino, breaking down the entrance door with a sledge-hammer.

Witnesses among the 600 guests say they were ordered to lie on the floor. Some were injured by being stepped on or hit by the robbers.

The gang emptied the casino's cash registers of hundreds of thousands of pounds, and tried to get into the casino's strongroom by firing shots at the door, but were unable to break the lock.

It's thought the gang, who witnesses say spoke French, may have escaped to France. The border is just 200 metres from the casino.

Swiss and French police are now working together to track the gang down.