lobe
noun [ C ] uk/ləʊb/ us/loʊb/
(ORGAN)
anatomy specialized（尤指大脑、肺、肝等器官的）叶
any part of an organ that seems to be separate in some way from the rest, especially one of the parts of the brain, lungs, or liver
the frontal lobe of the brain 大脑的前叶
(EAR)
耳垂（同 earlobe）
an earlobe