lichenKK [ˋlaɪkən] /ˈlaɪkən/发音名词1地衣、青苔Gray lichen covered the old stone wall behind the church.教堂后方的旧石墙上布满灰色的地衣。2苔癣医学The doctor diagnosed her rash as a form of lichen.医师诊断她的疹子是一种苔癣。用这个字练口说→