404. That’s an error.

The requested URL /translate_c?depth=1&hl=hr&prev=search&pto=aue&rurl=translate.google.com&sl=en&sp=nmt4&u=https://en.m.wikipedia.org/wiki/Operant_conditioning_chamber&usg=ALkJrhgWNXXkl04xZsPFi3L2_L-qA6mYvA was not found on this server. That’s all we know.