test paper
英英释义
Noun- a written examination
- paper impregnated with an indicator for use in chemical tests
例句
用作名词(n.)- Litmus paper turns red in the presence of an acid.石蕊试纸遇到酸就变红。
- 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。
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