BBC在线收听下载:非洲领导人商讨拯救濒危动物行动

短语讲解：

1. Civil defense workers in the Syrian city of Aleppo now say at least 35 people were killed by government air strikes that hit a hospital on Wednesday night.

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. According to North Korea's state news agency, he was detained last year while in possession documents link to North Korea's nuclear program and military facilities, many believe Americans are often arrested and sentenced to pressure the United States for dialogue.

according to 根据，按照
例句：According to etiquette, you should stand up to meet a guest.
按照礼节你应该站起来接待客人。

3. The authorities in Nepal say helicopter firms are continuing to carry out unauthorized sight-seeing flights above base camp.

carry out 进行; 执行; 完成
例句：No matter what we do, we must carry out our duties.
无论干什么工作,我们都应履行自己的职责。