He peered at the underside of the car, but he could see nothing.他仔细查看了车底, 但什么也没看见。
the underside of the eyelid眼睑内侧
英汉双解词典包含368430条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。