at a pinch

介词短语
中文释义
英 /ˌæ.təˈpɪnʃ/   

英文释义

介词短语
  1. by a small margin or amount Australia,New-Zealand,UK,idiomatic,informal
  2. In an urgent or difficult situation; when no other solution is available. idiomatic

词源

at + a + pinch (“tight squeeze”)
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