The bat emits these ultrasonic pulses, very high pitch sound waves that we cannot hear.

蝙蝠会发出我们听不到的非常高的超声波脉冲。

So the bat sends out these pulses, very focused bursts of sound, and echoes bounce back.

所以蝙蝠发出这些脉冲，一种非常集中的声波，然后回声就会反弹回来。

This perspective makes sense if you simplify the workings of a complex brain, reducing it to an array of electrical pulses.

如果把复杂大脑的运作机制简化为一系列电脉冲，那么这种观点就讲得通了。

Then, about 7000 B.C., within the space of a few generations, they switched abruptly to herding domesticated goats and sheep and to growing einkorn, pulses, and other cereal grasses.

后来，大约在公元前7000年，在几代人的时间里，他们突然转向放牧家养的山羊和绵羊，转而种植单粒小麦、豆类和其他谷类牧草。

They both felt their pulses beat faster.

他们都觉得脉搏跳得更快了。

Mine end is now at hand: so say these warnings, and my failing pulses do confirm it.

我的末日就在眼前，从这些警告可以看出，还有我那衰竭的脉搏确实证实了这一点。

By and by their pulses slowed down, and Tom whispered, "Huckleberry, what do you reckon'll come of this?"

过了一会儿，他们的脉搏平缓了下来，汤姆低声说：“哈克贝利，你想这事结果会怎么样？”

The ideal diet would consist of cereals and pulses.

理想的食谱是谷类和豆类食品。

All living cells send out tiny pulses of electricity.

每个活细胞都会发出微小的电脉冲。

Then they run pulses of current through the wire.

然后，研究人员往电线上通过一阵阵电流。

As laser pulses are shortened, up goes their peak power.

随着激光脉冲时间缩短，它们的峰值能量也随之减少。

In would come vegetables and pulses, together with yoghurt.

该多吃的是蔬菜和豆类，另外加上酸奶。

The thought of Arctic oil has quickened more than pulses.

对北极石油的算计飞速加快。

But that doesn't seem to get the pulses racing in Finland.

但这个主意似乎并不能打动芬兰人。

The enhancements allow for sending and receiving short C2CK pulses.

这些改进允许发送和接收短的C2CK脉冲。

In the actual experiment, there were no leading and trailing pulses.

在实际的试验中不存在主导脉冲与后缘脉冲。

It now exists as pulses across an electronic network, and as an idea.

它现在是以电子网络中的脉冲形式存在，只是一个概念。

An electric probethat transmitted on-off pulses then scanned the pins.

一根能够传输开关脉冲的探测棒之后会扫描到金属针。

The team "combed" breath samples from volunteers with the light pulses.

“梳理”小组通过光脉冲对一些志愿者的呼吸样本进行测试。

Pulses of light can bleed together, adding noise and degrading the signal.

脉冲光会跟着一起散开，并会渗入噪音并使信号损失。

Pulses can cause muscle spasms or seizures, and deaths have been reported.

脉冲电会导致肌肉痉挛或癫痫，已有因此致死的报告。

She uses these pulses to determine how to polarise the photons she sends back.

她利用这些脉冲检查她送回的光量子是如何极化的。

The shorter the laser pulses, the broader the range of frequencies in the comb.

激光脉冲越短，频率梳的频率范围越宽。

The clock's job is to create a series of electrical pulses at regular intervals.

这个电子种的工作就是每隔一定间隔产生一系列的电子脉冲。

Dark pulses don't degrade or bleed nearly as much as light pulses do, said Mirin.

“暗脉冲则不会被降低或者散开，几乎和产生光脉冲一样。”梅林说道。

The tags send out pulses of sound which can be picked up by undersea receivers.

电子标签发射出可被海底接收器识别的声波。

Dolphins are known to make three types of sounds: whistles, clicks and burst pulses.

大家知道海豚可以制造三种声音：哨声、咔嚓声和促发脉冲声。

It is designed to detect the low-frequency radio pulses emitted by lightning strikes.

这一系统旨在感应雷击产生的低频射电脉冲。