单词	biramous
释义	biramous /bʌɪˈreɪməs / adjective Zoology (Especially of crustacean limbs and antennae) dividing to form two branches.An answer lies, he says, in the origin and modification of the ancestral biramous limb.... The appendages are primitively branched, and although this condition is modified in many species, adults always have at least some biramous appendages. The anteriormost five abdominal appendages are, almost without exception, biramous. Origin Late 19th century: from bi- 'two' + ramus + -ous.
随便看	expective expector expectorant expectorate expectoration expectorative expectorator expedience expediency expedient expediential expediently expedite expediter expedition expeditionary expeditionist expeditious expeditiously expeditiousness expeditor expel expellable expellee expeller

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