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　　Although Gutman admits that forced separation by sale was frequent，he shows that the slaves’ preference，revealed most clearly on plantations where sale was infrequent，was very much for stable monogamy. (3+)

　　难句类型：插入语

　　译文：虽然古特曼承认，由于奴隶买卖而造成的被迫离散甚为频繁，但他还是证明，奴隶的偏爱——在那些奴隶买卖并不频繁的种植园上被最为显著地揭示出来——在很大程度上侧重于稳定的一夫一妻制(monogamy)。

　　解释：本句中插入语的使用revealed most clearly on plantations where sale wa infrequent, 后半个分句中的主语that slaves' preference与系动词was离得太远，造成阅读的困难。

　　意群训练：Although Gutman admits that forced separation by sale was frequent，he shows that the slaves’ preference，revealed most clearly on plantations where sale was infrequent，was very much for stable monogamy.

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