What happened?
发生了什么？
At 14.40 GMT a single attacker drove a car over Westminster Bridge, near the Houses of Parliament in central London, killing at least two pedestrians and injuring many more.
格林尼治时间14：40，一名袭击者驾车驶过伦敦市中心议会大厦旁的威斯敏斯特大桥，致使至少2名行人死亡，多人受伤。
The car then crashed into railings outside the Houses of Parliament.
汽车随后撞上了议会大厦外的围栏。
The attacker, armed with a knife, ran to Parliament where he was confronted by the police. One officer - who was not armed - was stabbed and killed.
袭击者手持利刃奔向议会大厦时与警方发生对峙。一位没有武装的警察被刺死。
The attacker was shot dead by armed officers.
袭击者被武装警察击毙。
这张图直观地介绍了恐怖袭击发生的经过：
What was the scene like?
现场情况如何？
Witnesses have described pandemonium and panic.
目击者描述了现场的混乱和恐慌。
One, Richard Tice, said he was coming out of Westminster tube station at about 14:45 and was ushered by police onto Westminster Bridge.
理查德•泰斯说，大约14：45分时他从威斯敏斯特地铁站走出来，在警方的带领下走上威斯敏斯特大桥。
He saw people lying on the bridge being tended to. He was told that a car had mounted the pavement and driven the whole way, from south to north, across the bridge, knocking people over.
他看到有人躺在桥上，旁边有人照料。他被告知一辆汽车驶上人行道，由南至北驶过大桥，一路冲撞行人。
"I counted eight people the length of the bridge, from south to north - at least eight."
“我算了一下，大桥上从南至北躺了8个人，至少8人。”
Who were the victims?
受害者是谁？
So far, only the police officer has been named. He was PC Keith Palmer, 48, of the Parliamentary and Diplomatic Protection Command. He had 15 years' service and was a husband and a father.
截至目前，只有一位遇难警察已确认身份。48岁的基斯•帕尔默，供职于议会和外交保护科，警龄15年，他也是一位丈夫和父亲。
The injured included three police officers who were walking across the bridge on their way back from a commendation ceremony. Two are described as being in a serious condition.
伤者中包括三名警察，事发时他们刚从一场表彰仪式上返回，正步行穿过威斯敏斯特大桥。据称其中两名警察伤势严重。
Police said a "range of nationalities" were among the injured.
警方称，伤者来自“多个国家”。
A group of French schoolchildren were on the bridge and three were injured in the incident.
一群法国小学生当时也在桥上，有3人在袭击中受伤。
Four university students from Edge Hill University, in Lancashire, were also hurt.
兰开夏郡边山大学的4名大学生也在袭击中受伤。
Who was the attacker? Was there only one?
袭击者是谁？只有一人吗？
The prime minister said there was a "single attacker".
英国首相特雷莎•梅表示，只有“一名袭击者”。
He has not yet been named. Police say they think they know who he is, and are "working to look at associates".
袭击者的姓名尚未公开。警方称，他们清楚袭击者的身份，并正在“努力寻找其同伙”。
Acting deputy commissioner Mark Rowley, the Met's top anti-terror officer said the working assumption was that the attacker was "inspired by international terrorism", but would not comment on his nationality or any other details.
伦敦大都会警察局代理副局长、最高反恐警官马克•罗利称，警方猜测袭击者是受到“国际恐怖主义的鼓动”，但他拒绝透露袭击者的国籍及其他细节。
He said police were focusing on the suspect's "motivation, preparation and associates".
罗利表示，警方正在集中调查嫌疑人的“动机、准备工作和同伙”。
What security has been put in place?
采取了何种安全措施？
Parliament was suspended and politicians, journalists and visitors to the buildings were locked in for about five hours.
英国议会暂时关闭，议会大厦内的政客、记者和观光者被封锁在内约5个小时。
Hundreds of people were evacuated from Parliament to Westminster Abbey for safety.
为安全起见，数百人从议会大厦撤离到威斯敏斯特教堂。
Police and the London mayor said there would be more unarmed and armed police officers on the streets in following days.
警方和伦敦市长表示，将在今后加强伦敦街头的非武装和武装警力。
The UK's threat level has been set at "severe" - meaning an attack is highly likely - for some time and this would not change, the prime minister said.
英国的恐怖威胁级别目前一直设为“严重”，代表着英国极有可能发生恐袭，特雷莎•梅表示不会调整危险级别。
Theresa May's London Attack Speech
特雷莎•梅就恐袭发表讲话
特雷莎•梅当日就议会大厦恐袭事件发表电视讲话，称此次事件是“令人作呕及邪恶的”行为，“不能让魔鬼瓦解我们”。
她说：
Tomorrow morning, Parliament will meet as normal.We will come together as normal.
明天早上议会将正常举行。我们将会一如寻常。
And Londoners - and others from around the world who have come here to visit this great City - will get up and go about their day as normal.
伦敦人民和来这里旅游的其他各国人民将会正常起床度过一天。
They will board their trains, they will leave their hotels, they will walk these streets, they will live their lives.
他们将如往常一样搭乘地铁、离开酒店、走过这些街道、各自生活。
And we will all move forward together. Never giving in to terror. And never allowing the voices of hate and evil to drive us apart.
我们都会继续向前，永不向恐怖主义妥协，不会让仇恨和邪恶的声音将我们分离。”