pri·mum英p'rɪməm美p'rɪməmCOCA¹⁹⁵⁰³⁶BNC¹¹⁴⁰²⁴⁺⁵Economist⁵³⁵⁸¹⁺¹ 基本例句 氟硝安定安眠药,麻醉诱导药,原始的 The authors emphasize early operation, firm repair of the VSD and ASD primum and restoration of the function of the mitral valve. 强调本病须尽早手术治疗、术中牢固修补VSD和原发孔 ASD及恢复二尖瓣功能的重要性。 biodic