这些都是“底部”的近义词：bottom,base,basic,basis,bottommost,depths,end,footing,foundation,fundament,fundamentally,ground,groundwork,heart,low,lower strata,lowermost,lowest,lowest level,lowest point,n...词组“at the bottom of “的近义词at the bottom of the ladder 最低梯级 at the foot of the ladderat the bottom of society 社会底层 society's lowest rungat the bottom of the the pile of paper 纸堆下面 under the pile of paper等等。要看上下文。