none

       Hopi people of the southwestern

       United States often characterize

Line       Hopi society between 1680 and

  (5)      1880 as surprisingly stable, con-

sidering that it was a period of

diminution in population and

pressure from contact with out-

side groups, factors that might

 (10)      be expected to cause signifi-

cant changes in Hopi social

arrangements.--这里“from contact with out-side groups”是修饰pressure么？“factors”指得是什么？我对这句话的理解是“研究Hopi族的人类学家通常描述Hopi族社会在1680-1880年期间出奇的稳定，认为1680-1880是一个人口和压力（来自于与外部群体的联系）都减小的时期，而人口和压力这两个因素是有可能引起Hopi社会结构巨大改变的的。      The Hopis’ retention of their

distinctive sociocultural system

 (15)      has been attributed to the Hopi

religious elite’s determined

efforts to preserve their religion

and way of life, and also to a

geographical isolation greater

 (20)      than that of many other Native

       American groups, an isolation

       that limited both cultural contact

and exposure to European

diseases.  But equally important

 (25)      to Hopi cultural persistence may

have been an inherent flexibility

in their social system that may   that是指flexibility吧？

have allowed preservation of

traditions even as the Hopis       红色标注这个从句改怎么与主句配合起来理解才好呢？总觉得有些别扭。谢谢了。

 (30)      accommodated themselves    

to change. 
    For example, the

system of matrilineal clans was

       maintained throughout this per-

iod, even though some clans

 (35)
        merged to form larger groups

while others divided into smaller

descent groups.  Furthermore,

although traditionally members

      of particular Hopi clans appear

 (40)     to have exclusively controlled

particular ceremonies, a clan’s

control of a ceremony might

shift to another clan if the first

became too small to manage

 (45)      the responsibility.  Village

leadership positions tradition-

ally restricted to members of

one clan might be similarly

extended to members of other

 (50)      clans, and women might assume

such positions under certain

unusual conditions.