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晒乳液。

Do I have to put on sunscreen?

我一定要擦防晒霜吗？

Everybody have their sunscreen and bug spray?

每个都带了防晒霜和防虫剂吧？

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

下来，我要试试传统的防晒乳。

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，你仍须使用防晒霜。

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

所以，尽情享受阳光，但也请在使用防晒霜的情况下享受。

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

为了测试防晒霜的一些效果，研究23名志愿者合作。

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

早上出门时，我通常会涂防晒霜。

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

现在要购买防晒霜，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 这里不卖防晒霜吗？

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

那么防晒霜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晒霜呢？

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晒霜是如何起到它的作用的。

And that's where US sunscreens fall short.

这就是美国的防晒霜未能做到的地方。

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晒霜。

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

我要涂防晒霜，因为不想被晒伤！

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

但涂防晒霜是最简单的。

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，你肯定需要防晒霜。

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霜就是——防晒！

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，各国对防晒霜的规定有所不同。