The role of UVA rays is less well understood and appears to have an effect on our tanning response, carcinogenesis, and aging.

但对 UVA 射线的作用的了解还不够全面，它会引发照射，致皮肤癌变，以及衰老。

These things are synthetic, meaning they're xenobiotics, meaning they're foreign to the body, meaning they'll stimulate inflammation, and inflammation is intimately tied to carcinogenesis.

这些物质是合成的，就是说它们是外源性化合物，意味着它们对人体是异物，会刺激，与癌的发生密切相关。

These things can actually cause damage, these things are synthetic, meaning they're xenobiotics, meaning they're foreign to the body, meaning they'll stimulate inflammation and inflammation is intimately tied to carcinogenesis.

这些东西实际上会造成损害，这些东西是合成的，这意味着它们是异生素，这意味着它们对身体来说是外来的，这意味着它们会刺激，与致癌密切相关。

So it did this, which I'm not aware of any carcinogens that they actually decrease in terms of the risk, like carcinogenesis as they go up in like the concentration.

所以它确实发生了这种情况， 我不知道有任何致癌物在风险方面实际上会降低，就像致癌作用随着浓度的上升增加一样。