"What was your most difficult case?" one asked the other.
其中一个问另一个:“你最棘手的病例是什么样的?”
Most of us associate learning as something difficult, something reserved for extremely intelligent people, but that is not the case at all.
我们大多数人认为学习是很困难的事,学习只属于那些十分聪明的人,但事实绝非如此。
Petroleum industry is a complex system full of technicality, the case it faces is layer kilometers deep. In most cases, quantitative analysis and accurate description is very difficult.
石油工业是一个技术性强的复杂系统,所面对的现实对象是地下数千公尺深的地层,在多数情况下无法定量、准确地对其进行真实描述。
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