当宝宝的肚子被挠痒时，他咯咯笑了起来。

The baby giggled when his tum was tickled.

爱是挠痒痒，唤醒她！

Love is waking her up with a tickle.

然后，一些老鼠接受了挠痒。

Then, some of them were tickled.

给石头挠痒它们也会咯咯笑吗？

Do rocks giggle when you tickle them?

但事实证明，我们在动物身上做了很多挠痒的研究。这些研究进一步支持了这一观点，即挠痒有益于心理健康。

But it turns out we have done a lot of tickle research in animals, and those studies provide further support to this idea that it's good for mental health.

这似乎是由于挠痒痒能够降低应激激素的能力，因为接受挠痒的大鼠其肾上腺素和去甲肾上腺素水平明显低于未被挠痒的大鼠。

This seemed to be due to tickling's stress hormone-lowering powers, as the tickled rats had significantly lower levels of adrenaline and noradrenaline than the rats who weren't tickled.

挠痒者在绰号“镍币”上刺了个勾号。

The tickler pricked a tick on the nickname Nickel .

挠痒者在绰号“镍币”上刺了个勾号.

The tickler pricked a tick on the nickname Nickel.

挠痒者在绰号镍币上刺了个勾号。

The tickler pricked atick on the nickname Nickel.

因此，尽管我们还没有在人类身上做过类似的实验，但挠痒的科学研究表明，挠痒可以缓解压力，提高幸福感，从而改善整体幸福感。

So even though we haven't done similar trials in people, the science of tickling suggests that it can likely relieve stress and boost happiness to improve your overall well being.