litmus

英 [ˈlɪtməs]

美 [ˈlɪtməs]

n.  石蕊(一种遇酸变红而遇碱则变蓝的物质)

化学

BNC.36064 / COCA.16349

牛津词典

noun

• 石蕊（一种遇酸变红而遇碱则变蓝的物质）
  a substance that turns red when it touches an acid and blue when it touches an alkali
  1. litmus paper
     石蕊试纸

英英释义

noun

• a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions
  Synonym:litmus test

双语例句

• Ending the fighting must be the absolute priority, the litmus test of the agreements 'validity
  停火绝对是第一要务，也是检验协议是否有效的试金石。
• Unsized paper treated with litmus for use as an acid-base indicator.
  未定尺寸经石蕊处理的纸，用作酸碱显示剂。
• But does aviation really serve as a litmus test for such a transformation?
  但是通过航空业的发展真的能够看出上述转变过程的推进吗？
• Do you see some sort of litmus test?
  您认为有某种类似石蕊试纸的东西可以帮助判断吗？
• Now, I would not provide a litmus test.
  现在，我不会提供石蕊测试。
• Apply the litmus test: Can some other presentation technology do this?
  看看最关键的考验：其他一些表示技术能做到这一点吗？
• To me it's a litmus test for people about who they are and how they perceive the world and how secure they are about themselves.
  我只把这电影当作人们认清他们是谁，他们如何观察这个世界和他们如何看待他们自己的试金石。
• When making decisions about the future, we naturally use events from the past as litmus tests.
  当我们做出有关未来的决定时，自然地我们用过去的事件作为”试金石“。
• You can discover the acidity of the solution with a litmus test.
  你可用石蕊来测试溶液的酸度。
• Litmus: Mixture of coloured organic compounds obtained from several species of lichens.
  石蕊：从几种地衣类植物中获取的带色有机化合物的混合物。