Artificial lights block formation of molecules that bond with air pollutants to clear the air.

人工照明系统阻碍了空气污染物与水分子的结合，起到了净化空气的作用。

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Small sugar fragments can set off a signal cascade that increases inflammation and scar formation. A small peptide can block this process and allow scar-free healing

糖碎屑能引发皮肤快速发炎和形成疤痕的显著层叠。

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Ifyou're just come out of the sun and think you may have overdone it, you can take aspirin or ibuprofen, as these are drugs that block the formation of the chemicals that cause redness and swelling.

如果你过度的暴晒在阳光下，可以吃阿司匹林和布洛芬，这些是可以缓解皮肤红肿的药物。

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"In the future, maybe there will be a heart-healthy yogurt, or a drug to block the formation of TMAO, " he said.

WSJ: New Health Culprit Carnitine Found in Red Meat

Just as the animals were anticipating a new shock, the scientists injected a chemical into their brains to block the formation of new memories.

FORBES: Oblivion in a Pill

Many kids aren't getting enough from their diet or the sun, especially since sunscreen can block vitamin D formation as well as blocking harmful rays, so take 'em outside!

CNN: A family's guide to healthy food substitutes