分析下列长句，并试着翻译
1．People feared that weakening a 21yearold ban on the sale of ivory would encourage illegal hunting and hurt elephant populations.
【分析】 that 引导宾语从句，从句中谓语动词是encourage和hurt，根据逻辑意义，可知encourage和hurt 的主语是动词ing形式短语weakening a 21yearold ban on the sale of ivory。
【句意】 二十一年来，象牙交易一直被明令禁止，人们担心削弱这一禁令会助长非法捕猎，导致大象数量减少。
2．Economists from the University of Sussex analysed findings from the National Longitudinal Study of Adolescent Health，a 15year research project charting the fortunes of a group of thousands of teenagers who attended high schools in the US in the mid1990s.
【分析】 句子主干为Economists analysed findings，from the University of Sussex作economists的定语；from the National Longitudinal Study of Adolescent Health作findings的定语；a 15year research project作the National Longitudinal Study of Adolescent Health 的同位语；charting...mid1990s作project 的定语；who引导定语从句，先行词为teenagers。
