master class

lesson, esp in music, given by a famous expert to highly skilled students 名家、 专家给优秀生教授的课（尤指音乐课）.

mass, Mass (also mass), mass communications, mass hysteria, mass media, mass-produce, Massachusetts, massacre, massage, masseur, massif, massive, massively, massiveness, massless, mast, mast-head, mastectomy, mastemaster, master, Master of Ceremonies, master sergeant, Master's degree (also Master's), master-key, master-stroke, masterful, masterfully, masterly, mastermind, masterpiece, mastery, mastic, masticate, mastication, mastiff, mastitis, mastodon, mastoid, mastoiditis, masturbate,