n.[脊椎]针鼹（echidna的复数）
echinus geyser───埃奇努斯间歇泉
booksheching chong───Booksheching Chong
echinodermata age───棘皮动物时代
beseeching defined───恳求明确
catechism of the catholic church───天主教教义
echinate meaning───词义
catechize pronunciation───儿化发音
echinodermata pdf───棘皮动物pdf
echinus───n.海胆；钟形圆饰
Czechic───adj.捷克的；捷克人的；捷克语的（等于Czech）
The theory seems plausible for platypuses, which are amphibious creatures. Echidnas, however, dwell solely on land.───这个理论对两栖的鸭嘴兽来说有些道理，然而针鼹却是完全陆生的动物。
The most primitive of the armoured mammals are the five species of echidnas, or spiny anteaters, from Australasia.
They found that echidnas diverged from platypuses only 19 million to 48 million years ago, meaning that echidnas recently had semiaquatic ancestors and only later recolonized the land.
The platypus, along with its cousins the echidnas, is an egg-laying mammal yet suckles its young on milk!
There we can see lacy monitors, wallabies and even two-eyed echidnas.
It is curious, too, to note that echidnas also possess spurs but their venom gland is non-functional.