litmus paper

• n. 石蕊试纸

英英释义

Noun:

1. unsized paper treated with litmus for use as an acid-base indicator

例句

用作名词 (n.)

1. Litmus paper turns red in the presence of an acid.
   石蕊试纸遇到酸就变红。
2. We test the liquid for acidity with a strip of litmus paper.
   我们用一条石蕊试纸来试验这液体是不是酸性的。