They see the problem and the community join efforts to create a kind of functional equivalent, a reinforcement which in this case replaces the absence of a capable teacher.

他们看到了这个问题，社区共同努力创造了一种功能对等的东西，在这种情况下，这种强化取代了有能力的教师的缺失。

Dr Deecke found, upon close examination of his photographs, that all three rocks were encrusted with barnacles and he reckons these were acting as the functional equivalent of the teeth of a comb.

Deecke博士在仔细研究所拍照片后发现，那三块石头上都粘有藤壶，而他认为这些藤壶的功能梳齿一样。