WORD BY WORD
voluntary
英/vˈɒləntəɹi/
美/ˈvɑɫəntɛɹi/
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01adj.
自动的, 自愿的, 故意的, 志愿的, 自发的
of your own free will or design; done by choice; not forced or compelled; controlled by individual volition
02n.
自愿行动, 志愿者, 自由调
composition (often improvised) for a solo instrument (especially solo organ) and not a regular part of a religious service or musical performance