working horse

名词 n.
中文释义

英文释义

名词 n.
  1. Synonym of workhorse (“someone or something that does a lot of work”). figuratively
    — Since the introduction of ultrasound in cardiology in the mid fifties, echocar­diography has continued to grow and has finally become, in particular after the introduction of Doppler modalities, the working horse of the cardiologist.

词形变化

working horses plural
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