Indigenous methods for engaging in collective action have sometimes survived for centuries, through floods, fires, pests, overpopulation, and warfare.

有些用于参加集体行动的内生方法经过了几个世纪的演进，经历了洪水、火灾、虫害、人口过剩以及战乱等的考验。

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Some people go around, they say, well, the President is engaging in class warfare.

WHITEHOUSE: President Obama Speaks on the 2013 Budget

Anyone who says it is permissible to boycott Mishor Adumim is engaging in economic warfare against Haifa.

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Israel should begin making European nations pay a price for engaging in political and economic warfare against it.

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