fallback

fallback — 名詞

1. another option you have prepared in advance so that you can use it if your main

1.名詞B2
釋義

備案

主方案失敗時可改用的備用選擇

another option you have prepared in advance so that you can use it if your main plan does not work or something you depend on suddenly becomes unavailable.

例句

Padma always packs a power bank as a fallback in case her phone dies during fieldwork.

Padma 做田野工作時,總會帶一顆行動電源當備案,以防手機沒電。

as a fallback in case [X]

If the new supplier is late again, the factory will use last year's vendor as a fallback.

如果新供應商再次遲交,工廠會把去年的廠商當成備案來用。

use [X] as a fallback

同義詞
  • backup

    more everyday; very common in tech contexts

  • contingency

    more formal; emphasises planning for risk

  • reserve

    broader; often used for resources, not plans

反義詞
  • main plan

    the primary choice you intend to use first

文法句型

a fallback (for/in case of X)

have a fallback

用法筆記

Often appears as 'as a fallback' or 'have a fallback' — speakers stress that the option is held in reserve, not used by default.

常見錯誤

I will use the fallback first.
I will keep the second option as a fallback.
💡a fallback is the reserve choice, not the first choice.

fallback — 形容詞

fallback — 動詞