n.(名词)[C]媒介,手段,方法,工具 means by which sth is expressed or communicated[C]折中,中间物 sth that is in the middle between two extremes[C]生活条件,环境 substance or surroundings in which sth exists or moves or is transmitted[C]通灵的人,关亡人 person who claims to be able to communicate with the spirits of the deedadj.(形容词)[A]中等的,适中的 in the middle between two amounts, extremes, etc.