Life in technology

The advent of a new era in technology has brought tremendous innovation to our world.

Technology is a token of new era as it has been an essential part of human life .

我不明白"Technology is a token of new era" 你觉得token是什么意思? 

Many new innovations in technology are essential in the modern era.

Convenience and comfort living condition, varieties of recreation, and innumerable changes has (have) been explored due to exertion of technology, also shifted human thought.

New technologies heave brought a shift in human thought and innumerable changes. Life is more convenient because of technology. Technology has brought more comfortable living conditions (how??), new forms of recreation and so on.

Nevertheless, people acquire less happiness than they did in the past.

Nevertheless, people are less happy than they were in the past.

I think you are using too many new words that you don't know how to use. Try to read some sentences with the new words and then make some of your own to get a better "feel" for the words.

我觉得你谢了很多新的单词但是你不是确定怎么用。你学习新的单词时候应该看一些有这个单词的句子。那你可以明白怎么用。