The last half of the nineteenth century __the steady improve

The last half of the nineteenth century __the steady improve The last half of the nineteenth century_____ the steady impr the last half of the nineteenth century ____ the improvement 翻译 the last half of nineteenth century wintnessed the steay 英语翻译The second half of the nineteenth century was a very imp 英语翻译In the nineteenth century,the invention of the telegraph in the second quarter of the nineteenth century in the early nineteenth century. 英语翻译The second half of the nineteenth centurywitnessed the f The book in the nineteenth century. the other half of the century是什么意思? 英语翻译It is true that over the last half century the amount of