Dr Shaffer draws a parallel with a classic virus-infection curve: high at the beginning as those most susceptible fall ill, but gradually tailing off as people adapt.

谢弗博士画了一条和传统的病毒感染曲线相平衡的曲线：在一开始的时候很高因为那些最易感的人群都得病了，但是随着人们逐渐适应，也就变得越来越少。

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The paper deduces the calculation formula of parallel sidelines of spiral curve, and proves two characters of parallels sidelines. It can be applied to instruct actual setting-out work.

推导了缓和曲线的平行边线弧长计算公式，证明了平行边线的两个性质，对实际线路测设工作有指导意义。

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Mainfactors are as follows: standard solution, regressive curve, parallel experiment of sample, diacetyl monoxide's reagent colorimetric method, spectrophotometer, sampling, etc.

影响测定结果的分量主要有：标准溶液、回归曲线、样品平行试验、二乙酰一肟分光光度法、分光光度计、取样等。

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Remember that interest rates rarely shift up in a parallel fashion, so the yield curve will probably flatten, with longer-maturity yields rising by less than one point.

FORBES: Stretch That Yield