短语词组短語olfactory y tract 嗅束medial olfactory tract 內側嗅索lateral olfactory tract 外側嗅束olfactory tract sulcus 嗅束溝Olfactory tract and bulb 嗅覺束與嗅球olfactory bulb and tract 但左右側嗅球嗅束 返回 olfactory tract