慢速英语:National Parks Called America’s Best Idea

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词汇讲解：

1. establish vt.建立，创建
例句：It has taken decades for the fed to establish its independence.
美联储花了几十年时间才确立了独立性。

2. operate vt. 运转；操作
例句：You have to operate in a responsible way.
你必须以负责任的方式经营。

3. evidence n.证词；证据
例句：The evidence is not encouraging.
相关证据并不令人鼓舞。

4. communication n.通讯，通信
例句：Communication skills can be improved through practice.
你的交流技巧可以通过练习提高。

5. appear vi.出现，显现
例句：It makes you appear confident and in control.
它会让你显得自信和易于控制。

6. despite prep.不管；尽管
例句：Action ought to be taken despite the doubts.
人们应采取行动，尽管存在一些疑虑。