Do you know, vinegar and baking soda, the two combinations - they're like a volcano.

你知道吗，醋和苏打粉，两个组合到一起—就像火山喷发一样。

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That there are two colors per strut, so what's linking the two backbones together are two colored segments that come from the outside towards the middle, and that the colors occur only in certain combinations, red and green, yellow and blue, that's all you see.

每个梯阶有两个颜色,主链是由,两种不同颜色的片段由外向内连接起来的,这些颜色仅以某种特定方式配对,红连接绿,黄连接蓝,大家都能看到

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With those two combinations taken into account, the chances of a crash are incredibly high.

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But when the usual combinations of two or three drugs no longer work, doctors are turning to what's been dubbed "kitchen sink" therapy, in which as many as eight drugs are used simultaneously.

CNN: 'Kitchen sink' therapy last resort for some HIV patients

We're looking for the companies that have the best combinations of those two attributes.

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