cloaca

基本解釋

The liquid excreted through the urethra or cloaca.
通過尿道或泄殖腔排泄出的液體。
wiki.cnki.com.cn
It is highly probable that dinosaurs had a cloaca—as do most birds and reptiles—which is a single opening for urination, defecation, and reproduction.
就像大多數(shù)鳥類和爬行動物一樣，恐龍的體內(nèi)很可能有一個(gè)泄殖腔，這是一個(gè)既可排便排尿，也具有生殖功能的開口。
It originates from the wall of the cloaca directly in front of the vent on the belly side, and curls backwards so the shaft and head lies directly beneath the vent opening.
它起源于泄殖腔壁側(cè)面直接在前面的肚皮上發(fā)泄，和卷發(fā)向后使軸與頭部直接位于下方的通風(fēng)口開幕。

a cavity in the pelvic region of most vertebrates, except higher mammals, and certain invertebrates, into which the alimentary canal and the genital and urinary ducts open