This is important because altruistic behavior can appear in many disguises in real-world scenarios.

它的重要性在于利他主义的行为可以在现实生活中以多种形式呈现。

Until very recently scientists were hard put to detect altruistic behavior in chimps at least in laboratory studies of captive animals.

直到最近，科学家还没有发现黑猩猩的利他行为特征，起码在圈养的黑猩猩中没有发现。

To test whether this altruistic behavior was hardwired to a reward system in the insect's brains, Robinson and his colleagues gave the honey bees cocaine.

为了测试无私心行为是否与昆虫大脑中的回报系统有联系，罗宾逊教授和他的同事给蜜蜂服用可卡因。