The Combined Line and Recording (CLR) method of handling toll calls over long distances (100 miles or more) is introduced experimentally by Bell Systems.是什么意思_The Combined Line and Recording (CLR) method of handling toll calls over long distances (100 miles or more) is introduced experimentally by Bell Systems.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句