Underline all the verbs in the passage noting carefully how they have been used. Revise any Key structures you have forgotten.

划出课文中所有动词，并注意它们的用法复习忘记的关键句型。

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In addition, the solution has enhanced wireless network security by using three-level key structures and achieves a secure fast roaming.

另外，本方案采用三层密钥结构进一步增强了无线网络的安全性，实现了安全快速的漫游。

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Children may revise letters, vocabulary and key structures through playing fun games such as Matching pairs, Basketball game, What can you see? etc.

透过配对游戏、射篮游戏和你看见甚麽？等等有趣的互动游戏，幼儿可重温字母、生字和句式，进一步巩固英语基础。

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When we talk about resonance structures, we're talking about cases that have the same arrangement of atoms the key is the atoms are the same, and the thing that is different is the arrangement of electrons here.

当我们讨论共振结构的时候，我们讨论的是原子排布相同情况,关键在于原子是相同的，不一样的只是电子排布。

麻省理工公开课 - 化学原理课程节选

When we talk about resonance structures, the key word is that the electrons are delocalized.

但我们讨论共振结构的时候，关键词应该是非局域化的电子。

麻省理工公开课 - 化学原理课程节选

The support structures of key reactor components contain numerous structural defects.

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Ownership groups, farm systems, economics, organizational structures and philosophies are also key components in determining what constitutes an effective and efficient general manager.

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The company recognizes that key people can become disabled, so it structures backup plans.

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