单词	flightless
释义	flightless /ˈflʌɪtləs / adjective (Of a bird or an insect) naturally unable to fly: Galapagos has the world’s only flightless cormorant... The flightless birds and insects of such islands had clearly lost a highly complex function. The large, flightless moa bird that roamed New Zealand in ancient times grew much more slowly than modern birds, according to a new study of their bones. Whether the flightless birds used their beaks to impale or bludgeon their prey is unknown, Chiappe says. Derivatives flightlessness noun ... These creatures were plainly flightless, and the nature of their flightlessness requires some special comment. At this time the males molt their feathers and go through a month-long period of flightlessness while their new feathers grow in. The adaptations the dodo made for island living - flightlessness and gigantism - have made understanding its evolutionary history and classifying it based on body characteristics difficult.
随便看	ammonite ammonium ammonium carbonate ammonium chloride ammonium nitrate ammonoid ammunition amnesia amnesiac amnesic amnesty Amnesty International amnio amniocentesis amnion amniote amniotic amniotic fluid amniotic sac amn't A-mode amoeba amoebiasis amoebic amoeboid

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。