词典释义：
an agency or means of doing something
媒介；途径，方法，手段
-
using the latest technology as a medium for job creation 把最新技术作为创造就业机会的手段
-
their primitive valuables acted as a medium of exchange. 他们的原始贵重物充当交换媒介。
a means by which something is communicated or expressed
（传播或表达的）手段，方法
-
here the Welsh language is the medium of instruction. 在这里，威尔士语是教学用语。
the intervening substance through which impressions are conveyed to the senses or a force acts on objects at a distance
媒质，媒介物；传导体
-
radio communication needs no physical medium between the two stations 在这两个站点间进行无线电通讯无需任何有形介质
-
the medium between the cylinders is a vacuum .汽缸之间的媒质是真空。
the substance in which an organism lives or is cultured
培养基
-
grow bacteria in a nutrient-rich medium. 在营养丰富的培养基中培养细菌。
a liquid (e.g. oil or water) with which pigments are mixed to make paint
（颜料）溶剂（如油或水）。
the material or form used by an artist, composer, or writer
（艺术创作）材料，素材；（艺术）表现方式
-
oil paint is the most popular medium for glazing. 油性涂料是上光时用得最多的材料。
(
灵媒，巫师，招魂者。
the middle quality or state between two extremes; a reasonable balance
（品质、状态）中等；中间；中庸
-
you have to strike a happy medium between looking like royalty and looking like a housewife. 是显皇室风度还是做得像个主妇，你必须兼顾得恰到好处。
a particular form of storage material for computer files, such as magnetic tape or discs
（计算机文件）存储媒介。
about halfway between two extremes of size or another quality; average
中等的；中号的；适中的
-
John is six feet tall ,of medium build 约翰六英尺高，身材中等
-
medium-length hair .不长不短的头发。
【板球】 （投球，投球手）中速的。
-
be of medium height 中等身材
真题例句：
-
medium-sized 中型的
真题例句：
"late 16th cent. （originally denoting something intermediate in nature or degree）： from Latin, literally ‘middle', neuter of
