Two smartly dressed armed robbers stole jewellery worth almost £40m from a Mayfair jewellers in what is believed to be the biggest gem heist in British history, it emerged today.来源：www.examda.com
　　Posing as clients, the besuited criminals made their way past a security guard at Graff jewellers in London’s West End last Thursday. Once inside the prestigious New Bond Street shop they pulled out handguns, threatened staff and grabbed luxury rings, bracelets, necklaces and watches.
　　CCTV footage released today by Scotland Yard shows the duo leaving the jewellers. They fired two warning shots into the ground before escaping in a series of vehicles across Soho.
　　The extent of the heist was kept secret for nearly a week but police have revealed that the items stolen were worth £40m, dwarfing Britain’s previous biggest diamond jewellery robbery, in 2003, when items worth £23m were stolen, also from Graff’s.
　　Police also released images of some of the 43 items of stolen jewellery, including a pair of white round diamond double-hoop earrings, a yellow diamond flower necklace, a platinum white Marquise diamond ring and a men’s chronograph 45mm watch.
　　The robbers’ escape almost came to an abrupt end when their blue BMW crashed into a taxi in a nearby street. They abandoned the car, switching to a silver Mercedes, before changing cars again, climbing into a black vehicle, possibly a Ford Galaxy or VW Sharan.
　　The men – both well dressed, aged in their 30s and with London accents – are thought to have passed the stolen jewellery to a waiting motorcyclist, who made a quick getaway. At least two other men were acting as getaway drivers in three cars, police believe.
　　Detective Chief Inspector Pam Mace, of the Metropolitan police flying squad, said: "This was a well planned robbery with a number of vehicles used to help the robbers escape. These men are extremely dangerous and fired at least two shots in busy London streets as they made their getaway.
　　"Someone knows who these men are. They would undoubtedly have spoken about it beforehand or boasted about it afterwards. I would urge anyone who recognises them, knows the whereabouts of the jewellery or has any other information to contact us."
　　The first suspect was described as white, about 30, with a slim build, dark hair with a well-combed side parting, light stubble on his face and between 5ft 10 and 6ft tall. He was wearing a grey suit, white shirt and tie.考试大论坛
　　The second was described as black, also in his 30s, 6ft tall, more well built than the first suspect, and with very short afro hair. He was also wearing a grey suit and white open-neck shirt.
　　The suspects’ details have been circulated to all ports and airports but police believe they are likely to have organised an escape route and may already have left the country.　　
　　今日，两名衣冠楚楚、带着武器的劫匪从梅菲尔区的（Mayfair）一家珠宝店劫走了价值近4000万英镑的珠宝，人们相信这是英国史上最大的珠宝抢劫案。
　　上周四，两名劫匪西装革履佯装成顾客，在Graff珠宝店的保安面前大摇大摆地走过；甫一踏入这家著名的新庞德街（New Bond Street）上的商店，他们便拔出手枪恐吓职员，并劫走了众多昂贵的戒指、手镯、项链和手表。来源：考试大
　　伦敦警方今天公布的监控录像显示了两人离开珠宝店时的场景。在换乘了一系列车辆穿过苏活区（Soho）逃跑前，他们朝地上放了两枪以示警告。
　　劫案的详情已保密了将近一个星期，但警方透露被劫物品总价值达4000万英镑；这也使得此前于2003年发生的英国最大钻石珠宝抢劫案黯然失色－－该案被劫物品总额为2300万英镑，同样发生在Graff珠宝店。
　　警方同时公布了被窃珠宝中的43件物品图像，其中包括一对白色圆钻双箍耳环、一条黄色钻石花型项链、一个白色的白金侯爵夫人钻戒以及一只45mm直径的男式精密计时表。
　　由于劫匪们的蓝色宝马车撞上了一辆路边的计程车，逃亡几乎突然终止。他们弃车换乘一辆银色奔驰，再又一次换车之前，又登上了一辆黑色车辆，该车疑似福特银河（Galaxy）或者可能是大众夏朗（Sharan）。考试大－全国最大教育类网站(www．Examda。com)
　　这两人均穿着体面，大约30岁说话带有伦敦口音。警察认为，他们将盗窃得到的珠宝给了一个接应的摩托车手，随后该车手迅速驾车离开，至少有另外两人在3辆车中为他们的逃跑充当司机。
　　来自警视厅飞行队得侦缉总督察 Pam Mace说：“这是一起精心策划的抢劫案，安排了数辆汽车帮助劫匪逃跑。这些人极度危险，他们在夺路而逃时在繁忙的伦敦街道放了至少两枪。一定有人会知道他们的身份，无疑劫匪在案发之前向人提起过或者在抢劫成功后向人炫耀。我希望任何认出他们的人、知道珠宝下落或者有任何其他信息的人及时与我们联系。”
　　第一个嫌疑人外貌为：一个30岁左右的白人，身材偏瘦，深色头发梳理整齐地分向两别，脸上略有胡茬，身高介于5英尺10英寸和6英尺之间。他身着灰色西服，白色衬衫和领带。
　　第二个嫌疑人外貌为：一名30岁邹游的黑人，6英尺高，比第一个嫌疑人强壮，非常短的典型黑人头发。他同样穿着一件灰色西装和一件白色开领衬衫。
　　嫌疑人的具体特征已经被分发到所有港口和机场，但警方相信他们很可能已经计划好逃跑路线，并已经离开英国。