Noun:

1. an inability to experience pleasure

An.[医] 正常大气压anart.（用在元音音素前）一an unconquerable difficulty无法克服的困难an international comparison国际比较An opinion adverse to sb.与某人相反的意思。An offspring by a concubine侧室所出an intelligible explanation明白易懂的解释Anemia due to insect venoms昆虫毒素致贫血an advocate of Platonism.柏拉图哲学的提倡者。an exquisite cigarette case精致的烟盒An intellectual Olympian.一个超然卓立的智者an injection against rabies狂犬病预防注射