Don't forget to rub a good amount of sunscreen lotion all over your body.

别忘了全身上下要抹上大量的防乳液。

Do I have to put on sunscreen?

我一定要擦防？

Everybody have their sunscreen and bug spray?

每个人都带了防和防虫剂吧？

Next, I'm going to try good old-fashioned lotion sunscreen.

接下来，我要试试传统的防乳。

But even if you don't burn, you still need to use sunscreen.

但即使你并未感到皮肤烧烫，你仍须使用防。

So, enjoy the sun, but enjoy it with sunscreen.

所以，尽情享受阳光，但也请在使用防的情况下享受。

To test some of the effects of sunscreen, researchers worked with 23 volunteers.

为了测试防的一些效果，研究人员与23名志愿者合作。

When I go out in the morning, I always put sunscreen.

早上出门时，我通常会涂防。

Now to buy that sunscreen, the American tourist needs six dollars.

在要购买防，美国游客需要付6美元。

Well, then that explains this. They don't sell sunscreen here?

难怪你皮肤粗糙 这里不卖防？

So, how does the sunscreen protect us from these rays?

那么防如何保护我们免于辐射光的危害呢？

With so many options, how do you choose which sunscreen is best for you?

有这么多的选择，你应该如何选择最适合你的防呢？

To answer that question, we first have to understand how sunscreens work.

为了解答这个问题，我们首先需要知道防是如何起到它的作用的。

And that's where US sunscreens fall short.

这就是美国的防未能做到的地方。

They may also buy the sunscreen in Hawaii if they have a doctor's prescription.

如果有医生的处方，他们也可以在夏威夷购买防。

I need to wear sunscreen, because I don't want to end up getting a sunburn!

我要涂防，因为不想被伤！

But one of the easiest things we can do is to wear sunscreen.

但涂防是最简单的。

And you'll definitely need sunscreen if you visit one of Australia's many deserts.

如果你去大洋洲的一个沙漠旅游，你肯定需要防。

So the best anti-aging cream you can buy is probably just sunscreen!

所以你能买到最好的抗老面就是——防！

First, as a disclaimer, it's worth noting that countries approach sunscreen regulations differently.

首先，作一个声明，值得注意的是，各国对防的规定有所不同。