单词 undilatable 释义 undilatable, a.(un-1 7 b, 5 b.)1862Meadows Man. Midwifery 173 The os [uteri]..is still very undilatable.1863Bates Nat. Amazon iii. I. 102 The undilatable jaws..also distinguish them from other snakes.{var l=document.getElementsByTag...