| 单词 | room-to-room | 
| 释义 | Definition of room-to-room in English:room-to-roomadjective 
 OriginEarly 20th century; earliest use found in Edith Wharton (1862–1937), writer. Definition of room-to-room in US English:room-to-roomadjective 
 OriginEarly 20th century; earliest use found in Edith Wharton (1862–1937), writer.  | 
	
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