不可: 1.(不可以) cannot; should not; must not; not allowed; forbidden 短语和例子不可一概而论 must not make sweeping generalizations; 不可剥夺的权利 an inalienable right; 不可抗拒的历史潮流 an irresistible historical trend; 两
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
