n.a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior
同义词：olfactory brain
英汉双解大词典
rhinencephalon/ˌraɪnɛnˈsɛfəˌlɒn/
1.
N（名词）
the parts of the brain, in both cerebal hemispheres, that in the early stages of evolution were concerned with the sense of smell. It includes the olefactory bulb and tract and the regions of the limbic system 嗅脑 [anatomy]