美容: to improve one's appearance (using cosmetics or cosmetic surgery), to make oneself more attractive, to beautify...
不翼而飞: to disappear without trace, to vanish all of a sudden, to spread fast, to spread like wildfire...
第一线: front line, forefront...
虽说: though, although...
残留: to remain, left over, surplus, remnant...
理科: the sciences (as opposed to the humanities )...
持久: lasting, enduring, persistent, permanent, protracted, endurance, persistence, to last long...
文科: liberal arts, humanities...
堕落: to degrade, to degenerate, to become depraved, corrupt, a fall from grace...
递交: to present, to give, to hand over, to hand in, to lay before...