The attackers struck just outside the Green Zone, the heavily fortified area that houses many government buildings.

VOA: standard.2009.10.25

Again, when you traveling around Europe, if you're lucky to do that, you'll see these big fortified towns.

如果你有幸能周游欧洲的话,你会见到那些大型的要塞城镇

耶鲁公开课 - 欧洲文明课程节选

So iodine deficiency was a real problem and then salt started getting fortified with iodine, and that really corrected a lot of those deficiency problems around the world.

碘缺乏曾经是个大问题,随着加碘盐的逐渐普及,使得全球诸多碘缺乏问题得到了改善

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Avila is one of the most fantastic fortified towns in europe.

它是欧洲最梦幻的要寨城镇之一

耶鲁公开课 - 欧洲文明课程节选

This is less of a problem in modern life then it used to be, but because things are supplemented and fortified-- overly so in some cases-- but still the deficiencies are less common then they used to be.

相比过去,这在现代社会中已不太多见,因为如今很多食物有人工添加的微量元素,有些甚至是过度添加了,但相比过去,缺乏微量元素已不那么常见了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选