| 词组 | portable |
| 释义 | 有很多 portable 的东西: a portable toilet a portable building a portable office a portable heater a portable DVD player a portable washers and dryers a portable TV a portable computer a portable typewriter a portable skills a portable pension a portable software a portable heater a portable insurance policy a portable document format a portable stage a portable radio a portable phone a portable short-wave set a portable battery-operated units portfolio，file，document 3 词都有“文件”的含义。 1． portfolio 较强调“图片、照片等方面的文件”以及“找工作、转学、任职等需要的文件”，如履历、成绩单、推荐信: Bush's ‘architect ’ builds up his portfolio. his portfolio at Yale a portfolio of her own political car- toons 2． file 偏重“书写的文件”，较强调 “保密”: confidential files 3． document 尤指“官方的文件”: legal documents military documents |
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英语用法大全包含3679条英语用法指南，基本涵盖了全部常用英文词汇及语法点的翻译及用法，是英语学习的有利工具。