London Terror Attack, 倫敦恐怖襲擊

Armed police respond outside Parliament during an incident on Westminster Bridge in London, Britain on Wednesday, March 22, 2017. (Photo by Stefan Wermuth/Reuters)

A woman ducks under a police tape after an incident on Westminster Bridge in London, Britain on Wednesday, March 22, 2017. (Photo by Toby Melville/Reuters)

London : Conservative Member of Parliament Tobias Ellwood, centre, helps emergency services attend to an injured person outside the Houses of Parliament, London, Wednesday, March 22, 2017. (Photo by AP Photo/PTI)

London Terror Attack