以下为句子列表：
英文: Acetylation between alcohol and benzoyl oxide was carried out using ZnBr2 as a Lewis acid catalyst in solvent-free condition. Some structures were characterized by NMR and IR.
中文: 以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经NMR和IR表征。
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英文: Acid-proof brick ,acid-proof daub and plaster paint developed by this factory can be used as refractory material for temperature preservation of boiler funnel of power station ,which have such advantages as acid resistance ,heat resistance ,good heat insu
中文: 耐酸破砖、耐酸胶泥及抹面涂料是我厂自行研制开发的适用于电站锅炉烟囱及热网管道保温之用的耐火材料，它具有耐酸腐蚀、耐温、耐热稳定性、施工方便的特点。
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英文: Although acid is often thought to be the stomach's main line of defense against invading bugs, the researchers found that E. coli, Salmonella and other bacteria could survive for hours in it, whereas high normal concentrations of nitrite plus acid killed
中文: 虽然我们常视胃酸为胃部抵御入侵病菌的主要防线，然而研究者却发现大肠杆菌、沙门氏菌以及其他细菌可以在胃中存活数小时。
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英文: Angina pectoris: It is acid that the banana has a kind of natural making to a healthy function of easing pain.
中文: 心绞痛：香蕉对身体有一种天然的制酸性，有镇痛作用。
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英文: Approximately 20 million ha are presently abandoned to savanna on predominantly poor nutrient status acid soils.
中文: 到目前为止，约有2000万公顷已弃荒成为热带稀树草原，土壤酸性，养分极少。
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