咖啡淡淡的酸味来自于此。往好的看，奎宁酸是合成抗感冒药达菲的起始原料化合物之一。
Gives coffee its slightly sour flavor. On the plus side, it's one of the starter chemicals in the formulation of Tamiflu.
通过在其他制作玻璃的原料中添加金属化合物，你可以得到特定的颜色。
You got specific colors by adding metallic compounds to the other glass making ingredients.
但是，高涨的油价还激发了寻找新的化学中间品来源的竞争——这些化合物是许多现代材料的原料，比如塑料、药品以及燃料等等。
But the oil price hike has also fueled a race to find new sources for chemical intermediates - compounds that are the raw material for many modern plastics, drugs and fuels.
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