BBC在线收听下载:墨西哥总统提议修宪改革 向私企开放石油工业

短语讲解：

1. Eric Holder said that certain low-level nonviolent drug offenders with no ties to organised crime will no longer be charged with offences that impose what he termed draconian and mandatory minimum sentences.

no longer 不再
例句：You no longer need them.
你不再需要诸多借口。

2. Gunmen in Nigeria have killed at least 44 people at a mosque in the north-east of the country.

at least 至少
例句：Read at least 30 books.
至少读30本书。

3. Iraq has seen a sharp increase in sectarian violence this year. On Saturday, more than 70 people were killed in a series of attacks.

more than 不只是
例句：More than 100 people were wounded.
爆炸还造成100多人受伤。

4. The left-wing parties have made it clear they oppose any change to the constitution and the government faces a complicated task in negotiating with all sides including the powerful unions.

make clear 弄清
例句：I'd like to make clear my thoughts on the subject.
我想说清楚我对这一话题的看法。