And there's only two countries, the U.S. and the former Soviet Union, that had major efforts on trying to create biologicalwarfare agents.
世界上只有美国和前苏联曾经花大力气研究生物武器。
2
The only ultimate concerns were biologicalwarfare aspects of this, but gave us the go ahead to start these experiments for the reasons we were doing them.
These examples demonstrate that recent treaties banning chemical and biologicalwarfare find a deeper resonance in human history, psychology, and morality.