当不速之客们奋力挤向狭窄的门和走廊时，人们开始恐慌。

Panic set in as gatecrashers tried to force their way through the narrow doors and corridors.

《柯林斯英汉双解大词典》

当人们开始恐慌时，他们改变了原有的购物习惯。

When people get scared, they change their buying habits.

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不幸的是，GDP下降的苗头一出现，媒体就报道可能会有一个经济衰退，然后人们开始恐慌，开始了一系列的连锁反应并最终导致了大衰退。

Unfortunately, at the first sign of decreasing GDP, the media reports a possible recession, people panic and start a chain of events that actually cause a recession.

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