化学家们早就知道，在分子中原子以特定的取决于整体分子结构的频率振动。
Chemists have long known that atoms in a molecule vibrate at a particular frequency, depending on their overall molecular structure.
如果你有原子晶体，它的声振动遍布不同可能的波长范围，频率都不高。
If you have an atomic crystal, it just has the sound vibrations at all the different wavelengths that are available. They're never very high.
每一个颗卫星上都装有四个“原子钟”，它们根据量子理论法则，以精确的频率振动。
Each satellite contains four "atomic clocks", which vibrate at a precise frequency, according to the laws of the quantum theory.
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