A closed circult, multi-channel television system used to distribute information ,venue feeds and return feeds for broadcasters and production staff at IBC and venues .是什么意思_A closed circult, multi-channel television system used to distribute information ,venue feeds and return feeds for broadcasters and production staff at IBC and venues .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句