单词	Sirenia
释义	Sirenia plural noun Si·​re·​nia sīˈrēnēə : an order of large aquatic herbivorous mammals including the manatee, dugong, Steller's sea cow, and several fossil forms that have the tail horizontally flattened and expanded into a broad rounded or bilobed fin, the hind limbs rudimentary or wanting and the front ones paddle-shaped, and jaws with horny plates on the front part and usually numerous flat-crowned molar teeth Word History Etymology New Latin, from Latin siren + New Latin -ia
随便看	defaulters defaulting defaulting (on) defaulting on defaults defaults (on) defaults on defaunate defaunation DEFCON defeasance defeasances defeasibilities defeasibility defeasible defeasiblenesses defeat defeat the purpose of defeatable defeated defeaters defeating defeatism defeatisms defeatist

英语词典包含469781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。