英音听力讲解:阿富汗发生系列自杀式袭

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短语讲解：

1. At least 46 people have died in a series of suicide attacks in Afghanistan.

at least 至少
例句：At least, I sincerely hope so. 
至少我是真诚地这样希望的。

2. Intelligence officials told us up to 14 potential bombers had planned to take part in the attack, but that some had been arrested.

take part in 参加
例句：Take part in the physical exercises and build up your strength. 
参加体育活动增强体力。 

3.  Not for the first time there are persistent rumors in Washington and Israel for the attack may be only months or weeks away – a timetable dictated not only by military possibilities, but by America's presidential election.

not only... but(also) 不但... 而且...
例句：These not only help in presentation but also help orient users. 
这不仅有助于表达，而且可以帮助使用者在创建时更好地定位。 

4. Large numbers of riot police have now been deployed to prevent repeat of Monday night's violence when about 100 youths set fire to cars, a nursery school and a youth center.

set fire to 点燃
例句：He set fire to the dry grass. 
他点燃了干草。