BBC在线收听下载:美国三名被囚禁多年的少女重获自由

短语讲解：

1. At least 55 people have been killed in a raid by Islamist militants on the Nigerian northeastern town of Bama.

at least 最少
例句：Go home and rest for at least one week.
回家最少休息一个星期。

2. It's thought the attack was carried out by the Boko Haram sect.From Lagos, here is Will Ross.

carry out 执行；进行
例句：The onus is on them to carry out immediate reviews.
它们有义务立即重新对此进行评估。

3. Concluding its meeting in Budapest, the assembly called for decisive action against contemporary expressions of the extremism.

call for 要求
例句：Consumers call for a boycott of apple products.
消费者要求抵制苹果产品。

4. As well as those killed, more than 30 people were injured in the accident, some of whom were sleeping in their homes at the time.

as well as 以及
例句：Your mental as well as physical health in that space.
你的精神以及身体健康的空间。