单语范例（未经PONS编辑处理）
英语
- The main objective of the project is to create a universal indicator of market attractiveness for companies and research institutions interested in investment in the emerging markets of mobile telephony.en.wikipedia.org
- The universal indicator is made from magnesium hydroxide with a pH value of 4.en.wikipedia.org
- A universal indicator is typically composed of water, propan-1-ol, phenolphthalein sodium salt, sodium hydroxide, methyl red, bromothymol blue monosodium salt, and thymol blue monosodium salt.en.wikipedia.org
- It is considered a universal indicator.en.wikipedia.org
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英语