常見(jiàn)例句Having no placenta, as marsupials and monotremes. 無(wú)胎盤(pán)的無(wú)胎盤(pán)的,如有袋目哺乳動(dòng)物和單孔目動(dòng)物Having no placenta,as marsupials and monotremes. 無(wú)胎盤(pán)的無(wú)胎盤(pán)的,如有袋目哺乳動(dòng)物和單孔目動(dòng)物All mammals except monotremes and marsupials are placental mammals. 除了單孔類(lèi)動(dòng)物和有袋動(dòng)物之外所有的哺乳動(dòng)物都是有胎盤(pán)的哺乳動(dòng)物。The world's only monotremes are the platypus and the echidna. 鴨嘴獸和針鼴鼠是世界上唯一的單孔類(lèi)動(dòng)物。Any warm-blooded vertebrate having the skin more or less covered with hair,young are born alive except for the small subclass of monotremes and nourished with milk. 溫血脊椎動(dòng)物,皮膚表層有或多或少的毛發(fā),除單孔目動(dòng)物之外其新生幼體都是活的并靠乳汁滋養(yǎng)。Animals that hibernate include bats, ground squirrels and other rodents, mouse lemurs, the European Hedgehog and other insectivores, monotremes, and marsupials. 冬眠動(dòng)物包括蝙蝠、地面松鼠和其它嚙齒類(lèi)動(dòng)物、鼠狐猴、歐洲刺猬和其它食蟲(chóng)動(dòng)物、單孔類(lèi)動(dòng)物和有袋動(dòng)物。 返回 Monotremes