英音听力讲解:奥巴马将支持重启禁止攻击性武器的法令

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短语讲解：

1. Mr. Carney also says the president is keen to close what some call the gun show loophole, where people are able to buy weapons without the sort of background checks that licensed dealers are obliged to run.

be able to 能够
例句：We'll be able to smooth away these difficulties.
我们能够克服这些困难。

2. The government says it simply can't give security to all of the tens of thousands of health workers giving vaccines.

thousands of 成千上万的
例句：Thousands of young people are learning to ski.
数以千计的年轻人在学习滑雪。

3. But now in a significant change it has been taken up six levels by Standard and Poor's to B-.

take up 占用
例句：You footballers take up a lot of his time.
你足球占用了他大量时间。

4. So the programme has been suspended and children are left at risk of getting a crippling disease.

at risk 处境危险
例句: The stylists also emphasize that everyone is at risk.
发型设计师也强调每个人都有危险。