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单词	Protohymenoptera
释义	Protohymenoptera plural noun Pro·​to·​hymenoptera "+ in some classifications : an order of extinct insects known only from the Permian and now usually included in the order Megasecoptera protohymenopteran "+ adjective or noun protohymenopteron "+ noun protohymenopterous "+ adjective Word History Etymology New Latin, from prot- + Hymenoptera
随便看	12 a.m. 12 p.m. 12-step 13-cis-retinoic acid 16-foot pitch 16-foot stop 16′ pitch 16′ stop 18-wheeler 1c 1′ pitch 1′ stop 2,4,5-T 2,4-D 2-d 2-foot pitch 2-foot stop 2.0 20 20 hindsight 24 24-7 2D 2h 2WD

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。