1. All of the above shows that international legal control on cross-boundary spread of commutable diseases is very important, particular and urgent. 而这些都表明了对于传染病跨界传播的国际法律控制的重要性、紧急性和特殊性。
2. This paper mainly discuss some property of ring which fit into anti-commutative law, and arrive at a conclusion that anti-commutative law is commutable. 本文主要讨论了适合反交换律的环的一些性质,并得出反交换环一定是交换环。