But it often fails to predict the changes that happen as a crowd's density increases and its movement becomes chaotic.

不过当涉及到群体的密度增加，运行变得混乱时，对于预测发生的变化往往不能奏效。

youdao

And if they happen then they will most often not be as painful or bad as you expected.

如果他们真的发生了，他们也并不如你所想的那样痛苦和糟糕。

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And the mistakes these guys commit often happen as SOON as they meet a girl.

这些男孩子们承认他们只要遇到一个女孩就常会犯错误。

youdao

As a result, baptisms often happen at a more relaxed pace nowadays, when a child is a year old or more.

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The report noted that storms generating more than an inch of rain could happen twice as often, and that wind speeds are dropping.

WSJ: Report predicts ever-bigger Lake Erie algae blooms

In the private equity business that kind of return doesn't happen very often, especially with figures as big as these (see table).

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