Unit 13 Cohabitation: Trial Marriage or Lack of Commitment?同居: 试婚还是缺乏责任?The fastest growth in cohabitation is among the over - 50 set.50岁以上的人口是增长最快的非婚同居人群.cohabitation trial matrimony同居试婚制The decline in marriage has been...
据说为研究和技术方面提供的经费严重不足。Research and technology are said to be chronically underfunded.词典上会把遗传学简单地定为 “ 研究遗传的科学. ”A dictionary may define genetics as simply " the science of the study of heredity ".该软件为研究人员和工程技术人员提供了一种新的磨损分析工...