In AIS patients and healthy controls,the mean position of the cerebellar tonsil was 0.9 and 2.9 mm above the BO line,respectively.是什么意思_In AIS patients and healthy controls,the mean position of the cerebellar tonsil was 0.9 and 2.9 mm above the BO line,respectively.在线翻译_英语_读音_用法_例句