plus-minus more or less; roughly. South African
1992Weekend Post He expected 'plus-minus' 1000 files would eventually be forwarded for 'possible prosecution'.
英语词组固定搭配大全包含15956条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。