the last half of the nineteenth century ____ the improvement

the last half of the nineteenth century ____ the improvement The last half of the nineteenth century __the steady improve 翻译 the last half of nineteenth century wintnessed the steay The last half of the nineteenth century_____ the steady impr 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 early nineteenth century. in the second quarter of the 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? at the mid-nineteenth century 啥意思