1650s, euphemism for "underground sewer," from Latin cloaca "public sewer, drain," from cluere "to cleanse," from PIE root *kleue- "to wash, clean" (cognates: Greek klyzein "to dash over, wash off, rinse out," klysma "liquid used in a washing;" Lithuanian šluoju "to sweep;" Old English hlutor, Gothic hlutrs, Old High German hlutar, German lauter "pure, clear"). Use in biology, in reference to eliminatory systems of lower animals, is from 1834. Related: Cloacal (1650s); cloacinal (1857).
实用例句
1. In the cloaca there are many annular an obvious one divides anus channel and uigenita 1 sinus.
泄殖腔内有明显的环褶将肛道与尿、生殖道分开.
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2. The mucous cells lie in the anterior part of the foregut and cloaca.
粘液细胞分布于前肠的前段和排泄腔.
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3. Especially do not call gasman box lunch , or call to repair you cloaca.
