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

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短语讲解：

1. He said when leaders try to change the rules in order to stay in office it can lead to strife, noting the situation in Burundi.

in order to 为了
例句：Let us risk seeming repetitious explanation, in order to drive it home.
为了便于理解，有必要作进一步说明。
lead to 导致
例句：Blindly copying others might very well lead to losses.
盲目搬用别人的经验很容易造成损失。

2. North Korea’s ambassador to China says his country is not interested in international negotiations about its nuclear program.

interested in 对…感兴趣
例句：He is interested in shipping.
他对当水手感兴趣。

3. It infected 186 people and forced more than 16,000 others into quarantine.

more than 多于
例句：Common sense is worth more than learning.
普通的见识比学问更重要。