单词	pro
释义	pro 2 (prō) Informal n. pl. pros 1. A professional, especially in sports. 2. An expert in a field of endeavor. adj. Professional: pro football.
随便看	on thin ice ontic on tilt on time on tiptoe onto onto- on toes ontogenesis ontogenetic ontogenetically ontogenic ontogenically ontogeny ontological ontologically ontologist ontology on top on top of on top of the world on trial on/under pain of on/upon(one's) hands on/upon (one's) hands

英语词典包含135693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。