In the second half of the 19th century many great inventions were made.翻译

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In the second half of the 19th century many great inventions were made.翻译
In the second half of the 19th century many great inventions were made.翻译

In the second half of the 19th century many great inventions were made.翻译
在十九世纪下半页出现了很多伟大的发明.

19世纪下半叶出现了许多伟大发明

在1850到1900期间出现了很多杰出的发明

19世纪后半期,出现了很多伟大发明。