慢速英语:US Senate Democrats Vote to Protect Iran Nuclear Deal

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短语讲解：

1. The United States said Thursday it will accept at least 10,000 Syrian refugees in the coming year.

at least 至少
例句：For that day at least he lost heart.
至少这一天他是垂头丧气的。

2. Chinese Premier Li Keqiang says his country's economy is facing "a number of difficulties and downward pressure."

a number of 一些; 许多的
例句：The vibrating object has executed a number of oscillations.
物体已经完成了许多次振动。

3. The rains forced tens of thousands of people to leave areas that have already received heavy rainfall.

tens of thousands of 成千上万; 千百万; 千千万万
例句：Tens of thousands of professional personnel
数以千万计的专门人才。