石蕊 (shí ruǐ) — (noun) litmus (chemical indicator used in acid-base tests); (noun) reindeer moss, Cladonia rangiferina (a type of lichen)

Definition

Examples

• 石蕊试纸可以用来测试溶液的酸碱性。
  shí ruǐ Shì zhǐ kě yǐ yòng lái cè shì róng yè de suān jiǎn xìng.
  Litmus paper can be used to test the acidity or alkalinity of a solution.
• 在北极地区，石蕊是驯鹿的主要食物之一。
  Zài běi jí dì qū, shí ruǐ shì xùn lù de zhǔ yào shí wù zhī yī.
  In the Arctic region, reindeer moss is one of the main foods for reindeer.
• 化学实验室里常用石蕊来检测物质的性质。
  Huà xué shí yàn shì lǐ cháng yòng shí ruǐ lái jiǎn cè wù zhì de xìng zhì.
  In chemistry labs, litmus is often used to test the properties of substances.