四则混合运算是哪四则简介:There was a burst of gunfire, and the long wooden target eighty steps away was hit with sawdust flying everywhere. The twenty-four musketeers were divided into three rounds and carried out three-stage shooting. Behind them, twenty-four more musketeers were preparing.
There was a burst of gunfire, and the long wooden target eighty steps away was hit with sawdust flying everywhere. The twenty-four musketeers were divided into three rounds and carried out three-stage shooting. Behind them, twenty-four more musketeers were preparing.