夏日防晒大作战，四招教你选对遮阳伞_时事

夏日防晒大作战，四招教你选对遮阳伞

Umbrellas aren’t just for rainy days. As everyoneknows, they’re also great tools for blocking thesun。

除了能挡雨，伞还是遮阳利器。这一点地球人都知道。

But picking the right umbrella is tricky. You have tocombine scientific know-how with fashion wisdom tomake the right selection。

但是，挑选一把合适的伞实属不易。需要科学与时尚相结合，才能做出正确的选择。

To help you outshine others on the streets and effectively protect your skin, here we havesome suggestions。

为了帮助大家在防晒的同时，还能吸引众人的眼球，以下是我们的一些建议：

1. Understand the UV protection factor

了解紫外线防护系数

Just like sunscreens, parasols are categorized with an ultraviolet protection factor (UPF) levelindicating their ability to block ultraviolet rays (UV). UV rays are harmful radiation emitted bythe sun and pose dangers to our skin ranging from minute tanning to even skin cancer andcataracts. A parasol labeled as UPF 30+ lets in less than one-thirtieth of UV rays. According tonational standards, only umbrellas made of materials that have UPF 30+ and restrict thepenetration of UV rays at 5 percent or less are qualified products that can be said to block UVrays. For daily use, you can choose parasols that are labeled at least UPF 30+. But if you stayoutside for a longer time, settle for UV umbrellas or UV parasols that are labeled UPF 50+ orabove, according to Buzzle.com, a general information website。