Network brings people not only thought invisibledamage, for many users of health also caused damage that cannot be ignored.
网络带给人们的不仅是思想上无形的伤害，对于许多网民的健康也造成不可忽视的伤害。
2
UV rays are invisible and can't be felt on the skin but can damage skin cells leading to sunburn and an increased risk of skin cancer.
紫外线是不可见的并且皮肤也感觉不到，但是它能损伤皮肤细胞而造成晒伤，患上皮肤癌的风险也会增加。
3
Clouds and pollution don't filter out UV rays, and they can give a false sense of protection. This "invisible sun" can cause unexpected sunburn and skin damage.