sapropel

/sap-ruh-pel/US // ˈsæp rəˌpɛl //UK // (ˈsæprəˌpɛl) //

树胶,汁液,皂素,皂角

Definitions

n.名词 noun

1
- : mud consisting chiefly of decomposed organic matter formed at the bottom of a stagnant sea or lake.