Witnesses reported multiple deaths from gunmen on rooftops and in the streets shooting at crowds with automatic weapons and even an anti-aircraft gun.
目击者证实屋顶上和街道中的枪手使用自动武器甚至防空炮向人群射击，已经造成多起死亡。
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The antitank SPG-9 "Kopyo" (" Spear ") grenade machine is not an automatic but recoilless gun. It consists of a trunk with a lock, a tripod stand and an electric mechanism which serves for firing.
The biggest is Mr Obama’s decision not to take on the gun lobby by seeking to renew a ban on the sale of certain semi-automatic weapons which lapsed in 2004.