Definition

Examples

• 用试纸测一下溶液的酸碱度。
  Yòng shì zhǐ cè yíxià róngyè de suānjiǎndù.
  Use test paper to measure the pH of the solution.
• 她用了验孕试纸，结果是阳性。
  Tā yòng le yànyùn shì zhǐ, jiéguǒ shì yángxìng.
  She used a pregnancy test strip and the result was positive.
• 这种试纸遇酸会变红。
  Zhè zhǒng shì zhǐ yù suān huì biàn hóng.
  This kind of test paper turns red when it contacts acid.