day one

名词 n. 副词 adv.
中文释义

英文释义

名词 n.
  1. The very beginning.
    — I've been with the project since day one.
  2. A close, longtime friend, one who has been around since the beginning. US,slang
    — Raise a cup up for all my day ones; two middle fingers for the haters […]
副词 adv.
  1. At the very beginning; when something is entirely new.
    — to buy something day one
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