屡试不爽

1. 屡试不爽 (lǚshì-bùshuǎng)

   1. 每次使用都有效;多次试验都不错 be found officious as often as it is tried;be often tried and often succeeded;effective every time it is used
      • 这种新农药效果良好,屡试不爽

屡试不爽是成语。

屢試不爽 (lǚ shì bù shuǎng)

1. 屢次試驗，結果都相同。