VOA慢速英语:Cleveland, Philadelphia Increase Security for Political Conventions

短语讲解：

1. The Republicans are expected to officially nominate businessman Donald Trump as their candidate.

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 for the party.
这次聚会可能要让我花钱.

2. The Democrats are preparing to meet at the end of the month in Philadelphia, Pennsylvania.

at the end of 在…结尾，在…末端
例句：At the end of the wood, the path diverges to the left.
在树林的尽头,小路向左拐去。

3. The cities of Philadelphia and Cleveland have each received $50 million to pay for security, according to multiple sources.

pay for 赔偿; 为…付钱; 因…受罚
例句：I have had to pay for repairs to the house.
我不得不支付房屋维修费用。

4. Officials are working with computer experts to stop hackers’ attempts to cut off telephone service and electricity.

cut off 切除; 切[隔]断; 剪[切， 砍]下; 迅速离开
例句：Fail to pay and they'll cut off the electricity.
你（如果）不付款，他们就要断电。