2000 75)Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements ---------themselves made relatively easy nowadays by modern means of transport.
1998 73)Astrophysicists working with ground-based detectors at the South Pole and balloon-borne instruments are closing in on such structures ,and may report their findings soon.
2003 63)The emphasis on data gathered first-hand, combined with a cross-cultural perspective brought to the analysis of cultures past and present, makes this study a unique and distinctly important social science.
2003 64)Tylor defined culture as “………..that complex whole which includes belief ,art,morals,law,custom,and any other capabilities and habits acquired by man as a member of society.”
2000 71)Under modern conditions,this requires varing measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
翻译：在现代条件下，这需要中央控制的不同措施从而还需要诸如经济学家和运筹学家等专家的协助。
4. 形容词短语作定语
1999 74)There is no agreement whether methodology refers to the concepts peculiar to historical work in general or to the research techniques appropriate to the various branches of historical inquiry.