Paleolinguistics is a term used by some linguists for the study of the distant human past by linguistic means. For most historical linguists there is no separate field of paleolinguistics.
paleolinguistics:
paleo- +? linguistics
英汉双解词典包含3185865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。