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A field of livelihood is so lively! Look at everything jumping around. It is so fresh and new and awesome! That being said, being so lively and fresh and new, it's pretty unrefined and rustic.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
Our school is so stupid that they ban the use of social media by students.