英语词汇“optional registration service”的翻译、意思、用法、释义-英汉汉英双解词典

单词	optional registration service
释义	optional registration service 🌏另选登记服务
随便看	voiceband data signal voiceband data transmission voice band data transmission system voice band equalizer voiceband facility voice band interface frame voiceband line voice band line voiceband telecommunication voice-band transmission voicebank voice bank voicebanks voice barricade voice-based voice-based telephone voice behavior voiceboard voicebox voice broadcast circuit voice broadcasting voice broadcast service voice broking Voice broking service voice browser