31. First, the perspective does not recognize that the user experience may be supported by requirements not perceivable by the user. 32. Optical isomers can have different detection thresholds because their conformations may cause them to be less perceivable for the human nose. 33. According to its observations, the incumbents had a perceivable advantage over the opposition in terms of visibility and media coverage. 34. The novel focus on inner details of the psychological and temperamental variation of the characters without perceivable external events and actions. 35. They also sense a crook, and even though Chili may be one, he could be perceivable as an honorable guy. 36. The structure acts as an amplifier of sound waves that would otherwise be only slightly perceivable by the inner ear structure alone. 37. The IOC spokesman said the committee believed the bribery scandal so far hadn't made any perceivable difference to the Games themselves. 38. As there was no perceivable tremor felt in the capital his political enemies were briefly able to relish the failure of his device, 39. Outside the modern mills the odour is perceivable only during disturbance situations, for example when shutting the mill down for maintenance break. 40. When he presented the Hunter Dance, his joy of being the monarch of all he surveyed in the forest was vividly perceivable .