旷日持久

protracted (idiom) / long and drawn-out

to neglect / to skip (class or work) / to waste (time) / vast / loose-fitting

abbr. for 日本[Ri4 ben3], Japan

sun / day / date, day of the month

to hold / to grasp / to support / to maintain / to persevere / to manage / to run (i.e. administer) / to control

lasting / enduring / persistent / permanent / protracted / endurance / persistence / to last long

(long) time / (long) duration of time