CNN news 2010-08-04 加文本

例句：Your presence at the party is requested.
      敬请光临。

      His presence is indicative of his interest in our plan.
      他的来到表示他对我们的计划发生兴起。

2.assist vt.援助,帮助

例句：The police will assist you in finding her address.
      警察将帮助你找到她的地址。

3.sacrifice n.牺牲, 舍身，舍弃

例句：His parents made a lot of sacrifices to make sure he got a good education.
      他的父母为确保他得到良好的教育而作了很多牺牲。

4.uncommon adj.不寻常的；罕见的

例句：Such attitudes were not at all uncommon thirty years ago.
      这些看法在30 年前很常见。

      It is not uncommon that a sunny morning will turn out to be a cloudy day at this time of the year.
      一个晴朗的早晨变成阴天,每年这个时候都并不少见。

5.overcrowding a.人口过密的

例句：The bedroom was overcrowded with furniture.
      这间卧室的家具堆挤得太多。

6.secure vt.握紧; 关牢

例句：Secure the prisoner so that he won't escape again.
      严密监禁那个囚犯以免他再逃掉。

7.unlock vt.开锁

例句：He unlocked the door.
      他打开了门上的锁。