Of course you can use any kind of physical signal.

- 当然，您可以使用任何类型的物理信号。

First, let’s think about physical signals.

首先，我们考虑一下身体信号。

You can do this with physical or verbal signals, or a combination.

您可以用身体信号或声音 信号或一个组合来做这个。

It can be applied to human skin to realize real-time monitoring of people's subtle physical signals and multi-scaled activities, such as pulse, swallowing and body movements.

它可以应用于人体皮肤，实现对人体微妙的生理信号和多尺度活动的实时监测，如脉搏、吞咽和身体运动。

Which means they do understand what we're saying to some extent, and we know that dogs are good at picking up on physical signals.

这意味着他们在某种程度上确实理解我们在说什么， 而且我们知道狗擅长接收身体信号。