noun🔗Share皮脂，油脂。 A thick oily substance, secreted by the sebaceous glands of the skin, that consists of fat, keratin and cellular debris."The teenager's skin was oily because of excess sebum. "这个青少年因为皮脂分泌过多，所以皮肤很油。bodyphysiologysubstanceanatomybiologymedicinechemistryChat with AIVocabulary GamePractice Reading
