cess·pool /-ˌpu(ə)l/
  汙水坑,化糞池
  Cess·pool n.  A cistern in the course, or the termination, of a drain, to collect sedimentary or superfluous matter; a privy vault; any receptacle of filth. [Written also sesspool.]
  ◄ ►
  cesspool
       n : a covered cistern; waste water and sewage flow into it [syn:
            cesspit, sink, sump]