Retrocaval ureter is a rare congenital anomaly in which the ureter passes behind, and is compressed by, the inferior vena cava.是什么意思_Retrocaval ureter is a rare congenital anomaly in which the ureter passes behind, and is compressed by, the inferior vena cava.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句