pulse中等

It is unarguable that our laboratories, scientific instruments, rockets and satellites — the tools we scientists need to measure the planet’s pulse — demand significant amounts of energy both in their construction and operation.

无可争辩的是，我们的实验室、科学仪器、火箭和卫星——这些我们科学家用来测量地球脉搏的工具——在建造和运行中都需要大量能源。

This [perspective] makes sense if you simplify the workings of a complex brain, [reducing] it to an array of electrical pulses; cells in plants also communicate through electrical signals.

如果你把复杂大脑的运作加以简化，将其归结为一系列电脉冲，那么这种观点就说得通了；植物细胞也通过电信号进行交流。