cloaca

• 指某些动物消化道末端的一个腔室，肠道、生殖道和泌尿道都开口于此；也指排放污水或地表水的下水道、排水沟。

A noun referring to a cavity at the end of the digestive tract in certain animals into which the intestinal, genital, and urinary tracts open, or a waste pipe that carries away sewage or surface water.

1. Biological cavityC1formalscientific

   A chamber in birds, reptiles, amphibians, most fish, and monotremes into which the digestive, urinary, and reproductive tracts empty.

   泄殖腔

   • In birds, the cloaca serves as the common opening for excretion and reproduction.
   • The frog's cloaca is located at the posterior end of its body.
   • Scientists studied the cloaca of the platypus to understand its unique anatomy.

   同义词vent

2. Sewage pipeC1formaltechnical

   A pipe or conduit that carries away waste water and sewage from buildings.

   下水道

   • The ancient Romans built an extensive system of cloacae to drain the city.
   • A blocked cloaca caused flooding in the basement.
   • The city's main cloaca was upgraded to handle increased waste water.

   同义词conduitdraindrainpipesewerwaste pipe