名词下水道，阴沟，泄殖腔

1. 泄殖腔：泄殖孔 -----泄殖腔(cloaca)为肠的末端略为膨大处. 输尿管和生殖管都开口于此腔,成为粪、尿与生殖细胞共同排出的地方,以单一的泄殖腔孔开口于体外. 软骨鱼、两栖类、爬行类、鸟类和哺乳类中的单孔类都有泄殖腔;

2. 下水道：clivers 拉拉藤属植物 | cloaca 下水道 | cloacae 下水道

noun

1. a waste pipe that carries away sewage or surface water

    Synonym: sewersewerage

2. (zoology) the cavity (in birds, reptiles, amphibians, most fish, and monotremes but not mammals) at the end of the digestive tract into which the intestinal, genital, and urinary tracts open