如果你可以看到影子，你就需要保护你的皮肤。

If you can see shadows, you need to protect your skin.

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这种防晒霜能保护你的皮肤。

This sun block can protect your skin.

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重要的是要保护你的皮肤，你在外面。

It is important to protect your skin when you are outside.

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When you would take the fluid from the cow, and you would inject it underneath the skin of a person you wanted to protect, then at that site where you injected it, you would get a lesion that looked like a smallpox or cowpox lesion.

当你从奶牛上得到脓液,并把脓液注射到想受到保护的,人的皮肤下面,然后在你注射的地方,你会看到像天花或者牛痘一样的病变

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