Since it is a priori proposition in the science of criminal law that a crime is a actus reus, omission undoubtedly has the nature of actus reus-the crux is to explain it reasonably.

其一是不作与理论，基于“犯罪是”一法先验命题，对于不作性结论应当毋庸质疑，关键是如何对其进合理说明。