开的发音时,舌头放低并放平,口腔敞开,正如bath一词中的a和father中的a发音一样时。用于元音发音 Pronounced with the tongue placed low and flat and with the oral cavity wide open, like the a in bath when pronounced like the a in father. Used of vowels.
唾液是由口腔的唾液腺分泌出来的。 Saliva is secreted by glands in the mouth.