if(args.recur_pose): assert(args.crop_size == 224)

This code block checks if the argument "recur_pose" is True. If it is, then it proceeds to check if the "crop_size" argument is equal to 224. If it is not, then an assertion error will be raised, which will stop the program from running. This ensures that if the "recur_pose" argument is True, the "crop_size" argument must be 224.