A photographic plate having standard dimensions of 81/2 inches by 6 1/2 (approx. 21.6 cm by 16.5).
Mid 19th century; earliest use found in Cleveland Herald.
英语词典包含464360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。