1. C 媒介，手段，方法，工具　means by which sth is expressed or communicated
2. C 折中，中间物　sth that is in the middle between two extremes
3. C 生活条件，环境　substance or surroundings in which sth exists or moves or is transmitted
4. C 通灵的人，关亡人　person who claims to be able to communicate with the spirits of the deed

　medium　只有作“通灵的人，关亡人”解时，复数形式才用mediums.

　find the ～　发现方法
　strike a ～　采取折中办法
　best ～　最好的手段
　favorite ～　喜欢的方式
　the natural ～　自然环境
　by the ～ of　通过…手段
　in ～　在…环境中
　～ between　折中的方法
　～ for　为…的介质

　There will be a fuss when the media get hold of the story.　新闻媒介得知此事会引起大惊小怪。
　This is an effective medium.　这是一种有效手段。
　Copper is a good medium for the conduction of heat and electricity.　铜是热和电的良导体。
　Water is the natural medium in which most fish live.　水是鱼类生活的自然环境。

 ♣ a/the happy medium
　中庸之道，折中办法　a way of doing sth that is halfway between two opposite ways that are possible
　We find a happy medium between working too hard and not working at all.　我们在劳累地工作和不工作之间找到一个折中办法。

A 中等的，适中的in the middle between two amounts, extremes, etc.

　～ height　中等身材
　～ temperature　适中的温度

　He has a medium body.　他有一个中等的身材。

　［同义词］ n. agency, average, instrument, means adj. average, middling
　［词源］拉丁语medius（中间）