短语词组短语olfactory y tract 嗅束medial olfactory tract 内侧嗅索lateral olfactory tract 外侧嗅束olfactory tract sulcus 嗅束沟Olfactory tract and bulb 嗅觉束与嗅球olfactory bulb and tract 但左右侧嗅球嗅束 返回 olfactory tract