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BNC: 19278 COCA: 19232
precautionary
adjective /prɪˈkɔːʃ(ə)n(ə)ri/
  1. done or used for protection against possible harm or trouble 预防的;防备的

    He was taken to hospital for a precautionary examination. 他被带到医院做预防检查。

    a precautionary step/measure 预防步骤/措施

     Synonyms and related words
    Protective: protective, defensive, precautionary...

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