mid-是什么意思？

mid-

英[mɪd]

• pref. 表示“中，中部”之义；

柯林斯高阶英汉双解学习词典释义

• PREFIX
  (用于构成名词或形容词)中间，中部，中期
  Mid- is used to form nouns or adjectives that refer to the middle part of a particular period of time, or the middle point of a particular place.
  例句
  ...the mid-eighteenth century... 18世纪中叶 Davis is in her mid-thirties. 戴维丝35岁左右。