jam tomorrow

短语

许诺但不兑现的东西, 可望而不可及的事物

发音

AU

释义与例句

n.
  1. 1.

    Promised benefits that never arrive.

    习语 不可数
  2. 2.

    The availability of a resource at a future date.

    习语 不可数 金融 引申义

词源

From Lewis Carroll's Through the Looking-Glass (1871), where Alice is offered “jam to-morrow and jam yesterday — but never jam to-day”. This is a pun on a mnemonic for the usage of jam, iam in Latin (note i/j conflation in Latin spelling), which means “now”, but only in the future or past tense, not in the present (which is instead nunc).

来源：wiktionary