It is meant to frighten off evil spirits.

目的是想吓走阴魂鬼神。

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Yuli farmers bedeck their fields with waving banners to frighten off wild geese and ducks.

旗海飘飘，玉里镇农民在田间插满旗帜以吓阻雁鸭。

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In ancient China, there was a form of dance which was performed at ritual ceremonies to frighten off the ghosts and to relieve people of epidemics.

例。中国古代有种舞，就是驱鬼逐疫的祭祀仪式上跳的舞。

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Moreover, they will get the money up-front, giving them a war chest likely to frighten off many firms thinking of entering the state's electricity market.

ECONOMIST: Chopping up America’s power | The

Although Mr Barrett was not actually chosen by the unions, the governor argues that the unions want to unseat him in order to frighten off any other politician who dares take on collective bargaining.

ECONOMIST: Wisconsin��s recall vote