英语词汇voluntary basis and free of charge怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	voluntary basis and free of charge
释义	free of charge — 白 free (of charge)— 免费
随便看	undertake a course undertake action undertake activities undertake activity undertake acts undertake additional work undertake a degree undertake a dialogue undertake a discussion undertake a due diligence undertake advanced studies undertake a full investigation undertake a further investigation undertake a job undertake a journey undertake a legal action undertake a liability undertake all actions undertake all activities undertake all efforts undertake all measures undertake all necessary undertake all necessary actions undertake all reasonable efforts undertake all steps

英汉双解词典包含2273206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。

free of charge —