number of state的用法和样例：
例句
- If you stay mentally and physically calm when you enter the trance state, you can maintain it for hours.
当你进入恍惚状态，如果你你保持心理和生理上的平静，你可以维持这种状态数小时。 - The doublet nature of this and other lines in the Na spectrum indicates a doubling of the expected number of states available to the valence electron.
钠光谱中的这条线以及其它线的双重性指出预期价电子可用的状态数是双重的。
