For example, the acute kind that accompanies a minor tissue injury such as a sprain or abrasion is protective: it encourages an organism to avoid further injury.

• 举例来说，一些伴随轻微组织受伤（好比拉伤或擦伤）的剧烈疼痛，是有保护作用的：它让生物避免进一步的受伤；