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01

今日长难句

We are obliged to them because some of these languages havesince vanished, as the peoples who spoke them died out or becameassimilated and lost their native languages.

02

词汇解析

be obliged to sb 感激某人

vanish 消失peoples 民族

assimilate 使同化

03

结构分析

主干:主系表(此处obliged为形容词)

修饰:because 引导原因状从注意 since 此处为副词表示“自那以后”

修饰:as 引导伴随状语从句

04

参考译文

We are obliged to them because some of these languages havesince vanished, as the peoples who spoke them died out or becameassimilated and lost their native languages.

我们感激他们，因为，讲这些语言的民族，要么已经灭绝，要么被同化，既而丧失本族语言。从那以后，某些本土语言业已消失。