慢速英语:Deadly Bombing on St. Petersburg Subway

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1.terrorism n.恐怖主义，恐怖手段; 威吓
例句：The government is determined to put an end to terrorism.
政府决心遏止恐怖主义活动.

2.investigation n.侦查; （正式的） 调查，研究;
例句：We are making a thorough investigation
我们正在进行彻底调查。

3.claim vt.声称; 索取; 断言
例句：He claimed that it was all a conspiracy against him
他声称这一切都是一场针对他的阴谋。

4.suicide n.自杀; 自杀行为; 自杀者;
例句：She tried to commit suicide on several occasions.
她自杀过好几次。

5.responsibility n.责任; 职责; 负责任; 责任感
例句：Each manager had responsibility for just under 600 properties
每位经理负责将近600处房产。