标题: 各位朋友帮帮忙，怎么理解这几句英文啊？ [打印本页] 作者: xiaozeixiaoben 时间: 13-4-2011 17:00 标题: 各位朋友帮帮忙，怎么理解这几句英文啊？ # Use your linked, in-text referenced paragraphs on fluoridation.
# Place and appropriate Introduction paragraph at the beginning of your linked paragraphs.
# Place and appropriate Conclusion paragraph after your last linked paragraph.作者: frozen_heart770 时间: 13-4-2011 19:08
专业写作么？还是学校作业？出自哪里？你的理解是什么呢？或者说一下你哪里不太确定？