标题: OG SC 53 [打印本页] 作者: wxp33215 时间: 2015-9-10 11:46 标题: OG SC 53 53. The nineteenth-century chemist Humphry Davy presented the results of his early experiments in his "Essay on Heat and Light," a critique of all chemistry since Robert Boyle as well as a vision of a new chemistry that Davy hoped to found.
chemistry 是不可数名词 前面为什么会有a 啊?
求教，求教~~ 作者: wxp33215 时间: 2015-9-10 11:58
og给的解释是 a vision of a new kind of chemistry ，难道kind of 可以省略？