英音听力讲解:大量难民穿越英吉利海峡引担忧

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短语讲解：

1. Thousands of migrants have been living near the French port of Calais，trying get into the UK, but security has been stepped up and many are forced to seek other routes.

thousands of 数千的
例句：A computer consists of thousands of components.
电脑由成千上万个部件组成。

2. The UK's National Crime Agency has warned that because security has been stepped up in major ports around the country.

step up 走上; （使） 增加
例句：We must step up our vigilance.
我们一定要提高警惕。

3. In fact at the moment, Britain's Border Force has just three cutters patrolling over 7,000 miles of coastline.

in fact 事实上; 实际上，其实
例句：In fact, that is the reason why I'm here to see you.
事实上 这是我来见你的原因。

4. And is setting up maritime coordination hubs to make sure people，drugs and weapons aren't smuggled into the UK.

make sure 把事情弄清楚，核实或查明某事物
例句：Make sure the passengers are strapped in(to their seats) before driving off.
开车前请乘客务必系好安全带。