заместитель сольвента(в сольвентных чернлах (описательный перевод) – Make-Up fluid is used in a continuous ink jet process. It replaces solvents lost through evaporation during normal ink drop recycling process. 4uzhoj)
дополнительное занятие(= урок коррекции: "Okay, it's time for one of my special makeup lessons since Kamijou-chan here has missed far too many days of class.arbyz9ka)