英音听力讲解:德国警方追捕柏林圣诞市场袭击案嫌疑人

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短语讲解：

1. Syrian rebel groups say they are discussing a ceasefire with Turkey, but that it's too early to say whether it has any chance of success.

too...to 太...以至于不能...
例句：This book is too difficult to understand.
这本书太难了而不能让人理解。

2. It said the incident had put the integrity of its computer network at risk, but that the systems were safe now.

at risk 有危险
例句：The report underlined his concern that standards were at risk
报告强调了他对道德水准可能会受影响所表示的关注。

3. The last military president of Uruguay Gregorio Alvarez has died in prison at the age of 91.

at  the age of 在…岁时
例句：He'd dropped out of high school at the age of 16
他16岁的时候就从中学退学了。