词汇讲解：

1. legalize vt.使合法化; 使得到法律认可
例句：It must be enacted into law in order to legalize the collection of revenues and the expenditure of funds. 
联邦预算必须制订成法律，使收税和使用经费合法化。 

2. demonstrate vt.证明，证实
例句：Can you demonstrate what you mean by that? 
你那样做能说明你的意思吗? 

3. solve vt.解决; 解答
例句：It does not solve anything.
生气不能解决任何问题。

4. residence n.住处，住宅
例句：He went on to his former residence. 
他继续向他从前的住所走去。 

5. consider vt.考虑; 认为
例句：There are two components to consider. 
有两个组成部分需要考虑。 

6. opportunity n.机会; 适当的时机良机
例句：The opportunity to chat is otherwise strictly limited. 
除此之外，谈话的时间就不多了。 


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