单词	retroperitoneal
释义	ret·ro·per·i·to·ne·al (rĕt′rō-pĕr′ĭ-tn-ēəl) adj. Situated behind the peritoneum.
随便看	up close upcoming upcountry update Updike updo updraft upend up for grabs upfront up-front upfrontness upgradable upgrade upgrowth upheaval upheave uphill uphold upholder upholster upholsterer upholstery up in arms up in the air

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。