立刻: forthwith, immediate, prompt, promptly, straightway, thereupon, at once...
扣留: to detain, to arrest, to hold, to confiscate...
老师: teacher...
退步: to do less well than before, to make a concession, setback, backward step, leeway, room to maneuver, fallback...
科目: academic subject, field of study...
半夜: midnight, in the middle of the night...
节能: to save energy, energy-saving...
勤奋: hardworking, diligent...
祭: to offer a sacrifice to (gods or ancestors), memorial ceremony, (in classical novels) to recite an incantation to activate a magic weapon, (and fig.) to wield...
不平: uneven, injustice, unfairness, wrong, grievance, indignant, dissatisfied...
