杨先生站在他那拥挤的仓库里，旁边就是露得清防晒霜、发夹、牙刷和各种化妆品，他表示自己的生意好的不能再好了。
Standing in his crowded warehouse, near boxes of Neutrogena sun block, hairpins, toothbrushes and a wide assortment of cosmetics, Mr. Yang says business could not be better.
研究人员们现在认为全面防护型的防晒霜未必是好的防晒产品，因为它们阻挡了某些能够激发人体自动防御功能的光波。
Researchers now believe that full sunscreen blockage is not necessarily good in sun creams because they block certain wavelengths of light needed to trigger the body's natural defences.
这两种物质都不会穿透皮肤，基于这两种成分的防晒霜效果好，还安全。
Neither one of these seems to penetrate the skin, and sunscreens based on these ingredients appear to be safe as well as effective.
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