Student or Learner
Could you help me please?
What does it mean?
Thank you very much.
It can refer to someone's age, to the middle part of the 1930s, to the temperature and even to an amount of money.
It doesn't need to be capitalized (unless it starts a sentence), and I don't know why it's usually hyphenated because "mid" is an adjective and "thirties" is a noun.