英音听力讲解:Facebook称在德国阻止虚假消息传播

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短语讲解：

1. He said he was open to a deal with Russia in which nuclear war heads would be reduced in exchange for the lifting of US sanctions on Moscow.

in exchange for 交换
例句：He gave me an apple in exchange for a cake.
他给我一个苹果，换一块蛋糕。

2. Mr. Jammeh also said that the date of 19th of January for his mandate to come to an end is not carved in stone.

come to an end 结束，终止; 完事
例句：The meeting has come to an end.
会议结束了。