$300 and I'll throw in my original 1979 mattel millennium falcon with real light speed sound effects.

300美元再加上我的1979年的原版千岁鹰，有真的光速音响效果哦。

Each earthquake pair happened in the same place but at different times, allowing the researchers to measure how much the sound waves sped up.

每对地震都发生在相同的地方，但发生的时间不同，这使得研究人员能够测量声波加速了多少。