单词	集半环
释义	集半环医semi-ring of sets
随便看	skin of medial surface of toe Skin of middle finger Skin of milk line Skin of mons pubis skin of nasolabial fold skin of neck Skin of neck skin of nipple Skin of nipple Skin of nose Skin of nuchal region Skin of occipital region skin of paint skin of palmar area of hand skin of palmar area of wrist Skin of palm of hand Skin of palpebral margins skin of parietal region Skin of pelvis Skin of penis Skin of perianal area Skin of perineum Skin of perineum and lower extremities skin of periorbital region Skin of philtrum