The rapid growth results from the fact that the majority of the people fall into the middle of a left-skewed bell-shaped curve.

之所以迅速增长，是因为大多数人都陷入了左弯的钟形曲线的中间。

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3 For many random variables, a good choice is the normal distribution, often represented as a bell-shaped curve, shown in Figure 1.

3对于许多随机变量来说，一个好的选择是正态分布，常常表现为一个钟型曲线，如图1所示。

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This is the most famous bell-shaped curve, but there are other ones with different mathematics.

（正态分布）是最著名的钟形曲线，但在数学的其他分支中也有别的钟形曲线。

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I should be able to do nice bell-shaped curves, but it's harder than it looks standing up here; so that's your bell-shaped curve.

我还是挺擅长画钟型曲线的,但站着画真的不太容易,这就是钟型曲线

耶鲁公开课 - 金融市场课程节选

This is the most famous bell-shaped curve, but there are other ones with different mathematics.

正态分布是最著名的钟形曲线,但仍有其他表达式下的钟形曲线

耶鲁公开课 - 金融市场课程节选

It's a bell-shaped curve that looks about like that.

大概就是一条这样的钟形曲线

耶鲁公开课 - 金融市场课程节选

This suggests that the familiar bell-shaped curve reflects no immutable law, and that intelligent government policies might well help to reduce pollution levels even while countries are still relatively poor.

ECONOMIST: Local difficulties

In other words, VAR said how much money a bank could lose in a single day IF mortgage borrowers behaved the way they had in the past and the world stayed within the 95% of the bell-shaped curve it normally occupies.

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Poll investors, amateur or professional, about the future and you will likely get a neatly-shaped bell curve of expected outcomes, with most respondents herding toward the perceived safety of the middle ground.

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