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英语高手 救命啊~~~ 关于 语法的问题啦~~~ 请帮助我!!
The1870salsosawtheadoptionofsteelrailsthatmaderailloadsaleadingsourceoftechnicalinnov...
The 1870s also saw the adoption of steel rails that made railloads a leading source of technical innovation in the nineteenth century.
这里的 The 1870s also saw 到底是 怎么会是啊? the 1870s在这里的作用是 代词么???? 展开
这里的 The 1870s also saw 到底是 怎么会是啊? the 1870s在这里的作用是 代词么???? 展开
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