词汇	maintain a tradition
释义	maintain a tradition 保持传统
随便看	voice-frequency channel voice frequency circuit voice-frequency circuit voice-frequency circuit-test unit voice frequency current voice frequency dispatching telephone voice frequency electric perspective voice-frequency electric wave voice frequency electric waves voice-frequency electric waves voice frequency electronics voice frequency equipment Voice Frequency Equipment voice-frequency facility terminal voice-frequency facsimile equipment voice frequency filter voice frequency generator voice frequency grade channel voice frequency keyer voice frequency keying voice-frequency keying voice-frequency key sending voice frequency leakage voice frequency link voice-frequency link