今日长难句
Early promises to end Indian tribute and taxes on people of mixed origin came much slower because the new nations still needed the revenue such policies produced. （完形，2007）
tribute / ˈtribju:t / n.贡品；贡金
origin / ˈɔridʒin / n.身世；出身；起源
revenue / ˈrevənju: / n.税收收入；财政收入；收益
结构分析
你需要知道
1.修饰revenue的定语从句省略了引导词that。
2.以下情况that可以省略：(1) that引导宾语从句时，可以省略。(2) that在定语从句中作宾语的时候，可以省略。
翻译
取消印第安人贡税以及向混血人种征税的早期承诺却迟迟未能兑现，因为新国家仍然需要这些政策带来的税收。
预告明日长难句
This success, coupled with later research showing that memory itself is not genetically determined, led Ericsson to conclude that the act of memorizing is more of a cognitive exercise than an intuitive one.（text1. 2007）
