英音听力讲解:美官员称掌握俄罗斯黑客攻击美国的证据

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短语讲解：

1.A senior official from the US Department of Homeland Security has told Congress it has evidence that Russian hackers targeted election systems in at least 21 states in last year's presidential election

at least 至少
例句：He's been away for at least a week.
他走了总有一个星期吧。

2.The State Department said the talks would focus on the ways to increase pressure on North Korea, but would also cover territorial rivalries in the South China Sea.

focus on 致力于; 使聚焦于
例句：The talks will focus on economic development of the region.
会谈将着重讨论该地区的经济发展。

3.Three MoDem ministers have now resigned and Mr. Macron is expected to announce a new cabinet in the coming hours.

be expected to 被期待做某事; 有望做某事; 期许
例句：I shall be expected to shell out the money for the party.
我将要支付这个集会的费用。