"The more we learn, the more amazed we are by the wealth of essential substances they contain," Van Horn continues, "and how they interact with each other to keep us healthy."

“我们了解得越多，就越惊讶于它们所包含的如此丰富的人体所需基本物质，” 范·霍恩继续说道，“以及它们如何通过相互作用来维持人体健康。”

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Keep paints, used oil, cleaning solvents, pool chemicals, and other dangerous household chemicals out of drains, sinks, and toilets because many of these products contain harmful substances.

把油漆，油，清洗溶剂，游泳池化学品和其他危险化学品，家用的排水管，水槽，和厕所，因为这些产品中含有的有害物质。

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Keep the machine dry. And mineral substances in rainwater, humidity and other liquids may corrupt its precise parts.

仪器要时刻保持干燥，雨水、湿气和液体含有矿物质，会腐蚀精密部件。

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The program provides a two-category drug system in an attempt to draw a clear line between therapeutic medications and banned substances in an attempt to keep horsemen from being punished for legal medications that remain in a horse's system before a race.

WSJ: Calif. horse owners want multi-state doping rules

Even the police admit that new substances now enter the market faster than the authorities can keep up.

ECONOMIST: Cocaine is cheaper, but weaker