1. The range through these states is mediated by the arousal system, a network of tracts converging from sensory systems to integrating centers in the brain stem. 这些状态的变化是以激发系统作为媒介完成的，而所谓激发系统，是指从各个感觉系统汇聚到位于脑干中整合中心的一个网络。
2. Just as the G8 leaders, world bodies and businesses talk increasingly from the same script, so the protesters' once disparate political and social analyses are converging. 正如八国集团领导人、世界组织和企业越来越多地谈论同样的内容一样，抗议者们曾经迥然不同的政治和社会分析正在趋同。
3. Dozens of recording stars began converging on a Hollywood studio Monday to add their voices to a song they hope will raise millions of dollars for Haitian earthquake relief. 周一，数十名歌星开始聚集在好莱坞的一间录音室，为一首歌配音，他们希望这首歌能为海地地震救灾筹集数百万美元。
4. Strike-slip faults occurring in the converging crust, or transpression, rocks are faulted upward in a positive flower structure. 在会聚的地壳或压转岩石中发生的走滑断层以正花构造向上断裂。
