Sometimes, molecules with completely different 3D shapes can trigger the same receptor, so some scientists think molecular vibrations might determine which keys unlock which receptors.

有时，具有完全不同三维形状的分子可以触发相同的受体，因此一些科学家认为分子振动可能决定哪些键可以解锁哪些受体。

And these signals arrive at your body as different forms of energy, light and heat, sound wave pressure, even molecular vibrations in  the chemicals that we smell.

这些信号以不同形式的能量、光和热、声波压力，甚至是我们闻到的化学物质中的分子振动形式到达您的身体。