litmus test

n. 决定性的试验(严峻的考验)

例句与用法：

Litmus paper can be used as an indicator of the presence of acid in a solution.

石蕊试纸可用以测试溶液是否含酸。

词形变化：

副词: liti-giously | 名词: litigiousness |

ph.

1. 石蕊试验

2. 试金石, 立见分晓的检验办法

litmus test

词形变化：

副词: liti-giously | 名词: litigiousness |

litmus test1.■【化学】石蕊试验2.■[比喻]试金石，决定性的试验；严峻的考验；立见分晓的试验(或检验方法)

1. (Chemistry)a test for acidity or alkalinity using litmus
   (化)石蕊试验
   ■(figurative)a decisively indicative test
   (喻)试金石
   effectiveness in these areas is often a good litmus test of overall quality.
   在这些方面的有效性是整体质量的试金石。
   

litmus test

名词 litmus test:

a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator

同义词：litmus

a test that relies on a single indicator

litmus test