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
Example Sentences:
1.
They say the observations cannot be explained by theories of gravity that remove the need for dark matter 他们说这些观察不能够通过重力理论来解释暗物质移动的必要。
