| 单词 | 石蕊试纸 |
| 释义 | 〔contact〕Litmus paper turns red on contact with an acid.石蕊试纸遇酸度会变红〔acid〕Any of a large class of sour-tasting substances whose aqueous solutions are capable of turning blue litmus indicators red, of reacting with and dissolving certain metals to form salts, and of reacting with bases or alkalis to form salts.酸：任何一类酸性的物质，它的水溶液可以使蓝色石蕊试纸变红，与金属反应或溶解金属时可形成盐，和碱反应亦可形成盐〔base〕Any of a large class of compounds, including the hydroxides and oxides of metals, having a bitter taste, a slippery solution, the ability to turn litmus blue, and the ability to react with acids to form salts.碱，盐基：一种有许多化合物的化学物，它含有金属氢氧化物和金属氧化物，带有苦味，溶液较滑，能使石蕊试纸变蓝，并能与酸反应生成盐 |
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