| 单词 | telephone switchboard | 
| 释义 | > as lemmastelephone switchboard   telephone switchboard  n. ΚΠ 1880    U.S. Patent 226,991 1/1  				I, T. Gardner Ellsworth, of the city, county, and State of New York, have invented a new and useful Improvement in Telephone Switch-Boards. 1917    J. Martin Diary 5 June in  Sapper Martin 		(2010)	 70  				It was a rotten business working a telephone switchboard with a gas helmet on. 2015    Birmingham Post 		(Nexis)	 8 Jan. 24  				When his first record..was played..the telephone switchboard was immediately flooded with calls from listeners asking for the song to be played again. < as lemmas  | 
	
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