英音听力讲解:伊斯兰国使用化学武器发动袭击

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短语讲解：

1. A man has been arrested in the United States in connection with recent threats made to Jewish organizations.

in connection with 与…有关，连同
例句：The police have taken him in for questioning in connection with the murder of a girl.
警察把他带到警局讯问有关一个女孩被害案件的情况。

2. The move is part of the peace agreement signed three months ago.

be part of 属于; 成为…的一部分
例句：She felt herself to be part of a large business empire
她觉得自己成了一个庞大的商业帝国中的一分子。