However, preoperative B-scan ultrasonography had failed to detect an intraocular foreign body (IOFB), and the previous fluorescein angiography had shown only retinal pigment epithelium changes.是什么意思_However, preoperative B-scan ultrasonography had failed to detect an intraocular foreign body (IOFB), and the previous fluorescein angiography had shown only retinal pigment epithelium changes.在線翻譯_英語_讀音_用法_例句