抽奖: to draw a prize, a lottery, a raffle...
暗地里: secretly, inwardly, on the sly...
底层: ground or first floor, bottom (of a pile), lowest rung (of society)...
来历: history, antecedents, origin...
势必: to be bound to, undoubtedly will...
簇拥: to crowd around, to escort...
重新: again, once more, re-...
数: frequently, repeatedly...
报酬: reward, remuneration...
教室: classroom...
