As a general rule, all forms of activity lead to boredom when they are performed on a routine basis.

一般来说，当任何活动以一种常规的形式开展时就会变得无聊。

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In general though, linear scaling DFT is still quite rare and DFT calculations on a routine basis typically involve a few hundreds or thousands of atoms.

通常情况下，线性缩放密度泛函理论的应用还是很少的，而密度泛函理论只能计算成百、成千的原子电子结构。

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