劍橋詞典a consonant sound in which air is able to flow almost completely freely 近塞流通音，無摩擦延續(xù)音，無擦通音 The sounds /w/, /l/, and /r/ are examples of approximants in English . 在英語中，w、l 和 r 都是無摩擦延續(xù)音。 返回 approximant