纯: 形容词1.(纯净; 不含杂质) pure; unmixed 短语和例子纯白 pure white; 纯黑 all black; 纯金 pure [solid] gold; 纯毛 pure wool2.(纯粹; 单纯) simple; pure and simple 短语和例子纯属捏造 sheer fabrication3.(纯熟) skilful; practised; w
物质: matter; substance; material 短语和例子可裂变物质 fissionable material; nuclear materials; 物质以三种形态存在: 固态、 液态和气态。 matter exists in three states: solid, liquid and gas.; 物质不灭定律 the law of conservation
