under the knife

介词短语
中文释义
英 /ˌʌndə ðə ˈnaɪf/    美 /ˌʌndəɹ ðə ˈnaɪf/

英文释义

介词短语
  1. Chiefly preceded by a form of go: undergoing a surgical procedure; into surgery. informal
    — Rumor that De Gaulle [i.e., Charles de Gaulle] was under the knife sped through Paris and the world the next morning. The staff at the Elysee Palace, De Gaulle's official residence, refused for hours either to confirm or deny the story; […] Finally, at 7:15 p.m., a bulletin signed by three doctors said that De Gaulle had been operated on that morning for "a disease of the prostate"— […]

词源

A reference to the situation of a patient lying on an operating table while a surgeon stands over them and operates using a surgical cutting tool (typically a scalpel).
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