慢速英语:Obama Speaks to African Union on Last Day of Africa Trip

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1. change vt.改变，变更
例句：People like to change things around to suit themselves.
人们喜欢改变周围的事物，使之适合自己。

2. broadcast vt.广播; 播放
例句：The concert was broadcast by relay.
这场音乐会是实况转播的。

3. discuss vt.商量; 讨论
例句：We’ll discuss these in detail below.
我们将在下面详细讨论。

4. release vt.释放; 发布; 发行
例句：He had won his first release from the fences of home.
他第一次成功地脱出家庭的樊笼。

5. apologize vi.道歉，认错; 辩解
例句：He had the grace to apologize to me for the insulting remark.
他通情达理地向我道了歉。