The most obvious anatomical feature of our brains is the undulating surface of the cerebrum - the deep clefts are known as sulci and its folds are gyri .

人脑最明显的解剖学特征就是大脑凹凸不平的表面，其中较深的裂缝被称为脑沟而褶皱被称为脑回。

Low density of grey matter of temproral lobe , sulci narrowing or disappearance and unclear grey matter margin .

颞叶灰质密度减低，脑沟变窄或消失，灰白质界限不清。