• 歯痛に即効がある
    • have an immediate effect on toothaches/〔すぐ苦痛を除く〕give immediate relief from pain caused by toothaches
  1. 即効薬a quick remedy; a quick-acting medicine
    • 長年の悪習に対する即効薬はない
    • There are no quick cures [《米》 fixes] for long-standing abuses.