要么是伦斯顿的学生接触了更多的化学物质，要么是他们比十年前的学生对这些物质更敏感。
Either Renston's schoolchildren have been exposed to greater quantities of the chemicals, or they are more sensitive to them than schoolchildren were ten years ago.
名称中的“可口”指的是古柯叶提取物，这种饮料的发明者化学家约翰·彭伯顿把古柯叶提取物与糖浆混合在一起。
The "coca" in the name referred to the extracts of coca leaf that the drink's originator, chemist John Pemberton, mixed with his sugary syrup.
借助一些化学药品，林顿(Linton)博士已能对1916年以来的陈旧干燥的博物馆标本进行编码。
Using some chemical wizardry, Dr Linton has been able to get barcodes from old, dried museum specimens collected as long ago as 1916.
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