VOA慢速英语:Islamic State Claims Responsibility for London Attack

短语讲解：

1. And he was investigated by the country's intelligence agency MI-5 "in relation to concerns about violent extremism.

concern about 使（自己）关心…
例句：The group has expressed concern about reports of political violence in Africa
该团体对有关非洲政治暴力的报道表示关切。

2. May added that there was no earlier information on the suspect’s plan or his reason for carrying out the attack. Investigators believe that the attacker was influenced by “Islamist ideology."

carry out 进行; 执行; 完成; 抬出去
例句：The Social Democrats could still carry out their threat to leave the government
社会民主党人仍有可能将其退出政府的威胁付诸实施。

3. British police have arrested eight people in connection with the attack.

in connection with 与…有关，连同
例句：The police have taken him in for questioning in connection with the murder of a girl.
警察把他带到警局讯问有关一个女孩被害案件的情况。

4. "Yesterday an act of terrorism tried to silence our democracy, but today we meet as normal, as generations have done before us and as future generations will continue to do, to deliver a simple message: We are not afraid and our resolve will never waver in the face of terrorism," she said.

in the face of 面对
例句：Little companies are known for their pluck and perseverance, even in the face of a recession.
小公司的勇气和坚毅是出了名的，即使面对经济衰退也是如此。