nuclear-test-banCOCA³¹⁵¹¹¹⁺⁴ 基本例句 🌏禁止核试验；禁止核试 Radiation levels have been monitored by the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization CTBTO, which operates63 surveillance stations around the world. 全面核禁试条约组织 CTBTO筹备委员会在世界各地设有63个监视站，正在对辐射水平进行监测。 who