federal - 연방의 ex)In the USA, the federal government sometimes has disagreements with the state's government. marble - 대리석 ex)The statue was made from pure white marble. matter - 중요하다. ex)Stop worrying. It really doesn't matter. persist - 계속되다. ex)The rain persisted throughout the night and into the next morning. feed - 먹이다. ex)The farmer has to get up early in order to feed the animals. apparatu..