We need a fallback position if they won't do the job.

如果他们不干这个工作，我们就需要一个应变的方案。

《牛津词典》

Yesterday's vote itself was a retreat from an earlier fallback position.

昨天的投票本身就是从早先的预备立场上的退却。

《柯林斯英汉双解大词典》

He remained COM silent and crept back to the prearranged fallback position.

他保持通讯静默，慢慢爬到预定的退却位置。

youdao

Turkey's former foreign minister, Yasar Yakis, admitted last week that Turkey never believed that the Americans had a fallback position.

ECONOMIST: Turkey's promises were always too hard to keep

It is hard to know whether this ambition was in earnest at the time or simply the fallback position of a hyper-urbane young person with a mild case of disaffection.

NEWYORKER: What She Said

He has announced his fallback position.

BBC: Fiscal cliff: Barack Obama's trap for Republicans