Dr. de geer said the terms of the treaty prevented him from divulging specific details , such as the exact readings of different radioactive isotopes picked up by the monitoring network .

德吉尔说，全面禁止核试验条约的有关规定禁止他透露监测结果的具体细节，比如监测网所发现各种放射性同位素的具体剂量。