ただ一いち度ど

expression, noun, adverb

only once; just once

Emphasizes that something happened or will happen a single time, often with a sense of finality or uniqueness.

• 彼かれに会あったのはただ一いち度どだけだ。

  I met him only once.

• 人じん生せいでただ一いち度どのチャンスを逃のがすな。

  Don't miss the once-in-a-lifetime chance.