杀手: killer, murderer, hit man, (sports) formidable player...
事实: fact...
来年: next year, the coming year...
优化: optimization, to optimize, to make superior...
辩论: debate, argument, to argue over...
延缓: to defer, to postpone, to put off, to retard, to slow sth down...
楼道: corridor, passageway (in storied building)...
变: to change, to become different, to transform, to vary, rebellion...
重叠: to overlap, to superimpose, to telescope, to run together, to duplicate, one over another, superposition, an overlap, redundancy, reduplication (in Chinese grammar, e.g. to have a stroll)...
液晶: liquid crystal...
