重点讲解：
1. state-of-the-art
使用最先进技术的；体现最高水平的；
eg. Many state-of-the-art computer-vision systems work along similar lines.
许多最先进的计算机视觉系统都以相似的方式工作。
eg. A new study employing state-of-the-art brain-scanning technology says that the answer may be yes.
一项使用了最先进的脑部扫描技术的新研究表明，答案也许是肯定的。
2. speak for
代表…讲话；充当…的代言人；
eg. I speak for all 7,000 members of our organization.
我代表本组织的 7，000 名成员发言。
eg. Obviously I can't speak for other people, but certainly no one I know would entertain the idea.
我显然不能代表其他人的意见，可是我认识的人当中肯定没有人会有这样的想法。
3. something of
有点儿；有几分；
eg. The city proved to be something of a disappointment.
结果这座城市有点儿令人失望。
eg. She received something of a surprise when Robert said that he was coming to New York.
当罗伯特说他就要来纽约的时候，她有点吃惊。