短语讲解：

1. The older brother was once considered to be the heir of his father and was expected to lead the country.

be expected to 被期待做某事; 有望做某事; 期许
例句：Increasingly teachers will be expected to be Internet literate.
形势越来越要求教师们通晓交互式网络。

2. Kim Jong Il died in December 2011, when Kim Jong Un took power.

take power 取得政权
例句：I wish my company had places like that for us to take power naps at work.
我希望我们公司也象那样在我们工作期间给我们睡午觉的地方。
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