难度大的文本标为正值，简单的文本标为负值。

Difficult texts record a positive score and simple ones score negative numbers.

《柯林斯英汉双解大词典》

该方法为求解难度大的非线性孤子方程提供借鉴。

This method should be helpful in solving difficult nonlinear soliton equations.

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针对工作轮叶片精度要求高，加工难度大的特点，进行工艺试验研究。

Researched the processing experiment aimed to the high precision and difficult process of the work wheel blades.

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And we noticed the built in pressure to try to bring into alignment our judgments about particular cases and the principles we would endorse on reflection.

然后我们发现,要在特定案例之下，自圆其说我们的判断,校正我们一再确认的原则，难度越来越大。

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Here's a harder case to think about.

下面这个案例的难度更大点。

耶鲁公开课 - 死亡课程节选