A/V switching is a feature that allows users to connect one or more sources, such as a VCR, camera and/or laser videodisc player and select which source will be monitored.是什么意思_A/V switching is a feature that allows users to connect one or more sources, such as a VCR, camera and/or laser videodisc player and select which source will be monitored.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句