The new book has too many words that I didn't know..

I think I'm not at that level to study with this book. I feel like the level jumped too much to a higher level. I got some help from translation, but I tried to translate the words by myself. This essay is about creating sentences with new words that I didn't know at first. Fighting!

Every citizen drinks purified water in Korea. 
Stagnant water means water that is not flowing and left sitting for long periods of time. 

Having a degree is the optimal requirement for this company. 
Since the drought, all farmers are having a hard time this season.
Kimchi is a typical example fermented food.
The stock has high variability, so it's not good for the beginners.
Her major is genetic engineering, and she will be a researcher.

Hi, Jin. You did a great job here. Anyway, we can talk about how you feel about the new book tomorrow. Have a great day!