I'm gonna keep as part of each stock, it's history of prices, which we can initialize, well, I've initialized it as empty, but that's probably the wrong thing, right?

我会把股票的历史价格，作为每只股票的一部分，我们可以先对它的历史价格进行赋值，好了，我先给它赋了空值，但是这样做可能不对，是吗？

麻省理工公开课 - 计算机科学及编程导论课程节选

But unlike the case with boron where we had an empty p orbital, we're actually going to have an electron in the p orbital of carbon as well.

但和硼里面有个空的p轨道不同，我们实际上有一个电子,在碳里p轨道里也有电子。

麻省理工公开课 - 化学原理课程节选

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