The name monotreme means one hole referring to the single orifice they use for reproduction, excretion, and egg-laying.
目这个词指一个,指的是一个用于生育、排泄,下蛋的。
Reptiles, amphibians, most birds, and monotremes like the platypus have a cloaca, a multipurpose swiss army knife of holes, linking the urinary, waste, and reproductive systems… I guess you could say: one ring to rule them all.
爬行动物、两栖动物、大多数鸟像兽这样的动物都有泄殖腔,这是一把多用途的瑞士军刀,连接着泌尿系统、废物系统生殖系统… … 我想你可以说:一环统领它们。