CNN news 2010-02-23 加文本
2010-02-23来源:和谐英语
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例句：There is a rigid hierarchy of power in that country.
那个国家有一套严密的权力等级制度。
2.optional adj.可选择的, 非强制的，选修的
例句：The goods are optional, but only one.
这些物品是可以任选的, 但只能选一个。
3.shortfall n.不足之量,差额
例句：There will soon be a shortfall in supply of qualified young people.
合格年轻人才的短缺将很快出现。
4.definitely ad.一定地,肯定地;明确地,确切地
例句：I'm definitely going to visit Switzerland this summer.
我决定今年夏季参观瑞士。
5.incentive n.激励某人做某事的事物; 刺激; 诱因, 动机,奖励
例句：A little bonus will give the employees an incentive to work harder.
一点奖金可以刺激雇员更加努力地工作。
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