GBM is the most common primary brain tumor in humans, constituting 12% to 15% of all brain tumors and 50% to 60% of astrocytic tumors.是什么意思_GBM is the most common primary brain tumor in humans, constituting 12% to 15% of all brain tumors and 50% to 60% of astrocytic tumors.在线翻译_英语_读音_用法_例句