国家地理杂志有一次引述世界级的蚂蚁专家鲍勃泰勒的话说，30个斗牛犬蚂蚁就可以咬死一个人。

The world expert on them, Bob Taylor, once was quoted in National Geographic as saying that 30 could kill a person.

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他说，由于蚂蚁是特别好的“生物指示器”，环境专家可以利用这些资料，主要依据某个生态系统内的蚁群数量来考察该系统是否状况良好。

He said that because ants were exceptionally good "bio-indicators," environmental experts could use the data to check if an entire ecosystem is healthy, based mostly on its ant population.

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发现这一现象的专家认为，蚂蚁实则充当着某些植物的“保镖”，它们会让践踏这些植物的大象无法接近保护对象。

The experts who made the discovery believe ants act as' bodyguards' for some plants to keep trampling elephants at bay.

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