investigate into短语¹³¹⁶²⁰⁺³ 基本例句 vt.调查研究 OBJECTIVE To investigate into the morphology of levator ani muscle and its anatomical relationship to anorectum so as to provide reference data for the prevention of anus incontinence with surgery. 目的探讨肛提肌形态及其与肛直肠的解剖关系和功能，为肛肠手术预防和治疗肛门失禁提供解剖学参考资料。 cnki