单词	reciprocation
释义	re·cip·ro·ca·tion (rĭ-sĭp′rə-kāshən) n. 1. An alternating back-and-forth movement. 2. The act or fact of reciprocating; interchange.
随便看	oto- otocyst otocystic otolaryngological otolaryngologist otolaryngology otolith otolithic otological otologist otology Oto-Manguean O'Toole otorhinolaryngological otorhinolaryngologist otorhinolaryngology otosclerosis otosclerotic otoscope ototoxic ototoxicity Otranto OTS Otsu ottar

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