In an audio tape released last week, the spiritual leader of radical Somali Islamist group al-Shabab, himself from Somaliland, ridiculed the breakaway region's continued attempt at democracy and independent statehood, saying that despite its nearly two-decade quest the region remains isolated and politically divided.

VOA: standard.2009.09.07

Unity was difficult. Being somewhat isolated, the inhabitants of each region developed a distinctive economic and cultural character.

团结很困难，它有一点孤立，每一个地域的居民都发展起来,有了各自经济文化特点。

耶鲁公开课 - 旧约导论课程节选

Now I isolated these cells maybe from the head region of the embryo, the region that's going to develop into the brain, so that would be a good place to look if you wanted cells that were going to develop into the brain.

现在我可以从胚胎的头部,分离这些细胞,从就要发育成为大脑的这些部位,这是取得你需要的细胞的绝佳位置,如果你想要发育成大脑的细胞的话

耶鲁公开课 - 生物医学工程探索课程节选