Anti-ultraviolet radiation fabric has best ultraviolet radiation screening factor, and can reach 99.9%, SPF50+, it can protect the body from harm of ultraviolet radiation.

防紫外线面料最大的特点是具有良好的紫外线屏蔽率，可达99.9%，SPF值50+，能很好的保护人体免受紫外线的伤害。

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They include social deprivation – but this factor on its own does not explain the limited access that such people have to primary health care and to specific screening and treatment.

它们包括社会剥夺，但这一因素本身并不能说明这类人在获得初级卫生保健和特定检查与治疗方面机会有限的根源所在。

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The study's results suggest that because infertility may be an identifiable risk factor for prostate cancer, early screening may be warranted in infertile men.

研究结果表明不育症一个对于前列癌是确定的危险因素，早年在不育症患者的筛查证明了结论。

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Researchers say increased breast density impairs the accuracy of screening mammography and is a strong, if not the strongest, risk factor for missing cancer.

CNN: Health - Hormone replacement may influence mammography accuracy

In the case of cancer screening, the countervailing truth is that early detection is the single-most-important and durable factor in individual cancer survival.

WSJ: Are Doctors Screening Too Much for Disease?